Safety Notice

CAA Notification on Safety Notices

SN-2024/007: ATA 72 – Reciprocating Engine – Inspection
The purpose of this Safety Notice is to recommend that maintainers, operators and owners accomplish the Corrective Actions as defined by the Transport Canada Civil Aviation (TCCA) AD CF-2005-40TCCA dated 5 December 2005. This Safety Notice is applicable to certain Lycoming and Continental Aerospace Technologies Reciprocating Engines as defined in this Safety Notice
Dated: October 2024

SN-20024/006 Version 2: Right-of-Way and Avoidance of Collisions
The purpose of this Safety Notice is to provide civil pilots with additional guidance regarding formations of military aircraft, rights-of-way and the avoidance of collisions. For the reader’s convenience, Version 2 of the Safety Notice includes an Annex which reproduces the text of UK AIP GEN 3.4 paragraph 3.2.5 relating to the VHF Low Level Common Frequency.
Dated: September 2024

SN-2021/017 Version 4: Potential Interference Risk to Radio Altimeters from 5G mobile Technology
The purpose of this Safety Notice is to offer guidance and information for operators regarding potential interference to the operation of radio altimeters from 5G mobile technology. Version 4 is published to clarify the revised domestic requirements when operating into the contiguous United States of America, Canada and Brazil.
Dated: September 2024

SN-2024/006: Right-of-Way and Avoidance of Collisions
The purpose of this Safety Notice is to provide civil pilots with additional guidance regarding formations of military aircraft, rights-of-way and the avoidance of collisions.
Dated: August 2024

SN-2024/005: A320 Aircraft Third Occupant Seat Harness Correct Routing
The purpose of this Safety Notice is to alert owners and operators of A320 family aircraft to the correct routing of the third occupant seat harness through the slots in the headrest assembly.
Dated: August 2024

SN-2024/004: Fire Suppression – Toilet Compartment Fire Extinguishers
The purpose of this Safety Notice is to alert owners and operators of a manufacturing defect with certain Part Numbered FFE fire extinguishers fitted in the toilet compartment.
Dated: July 2024

SN-2024/002 Version 2: Piper PA-28 and PA-32 Undercarriage Inspections
The purpose of this Safety Notice (SN) is to recommend that owners, operators and maintainers of Piper PA-28 and PA-32 aircraft (all models) carry out inspections of the nose and main undercarriage assemblies at the next routine maintenance inspection, following two recent accidents involving two different PA-28 aircraft. Version 2 is published to update the photo in Figure 2.
Dated: June 2024

SN-2024/002: Piper PA-28 and PA-32 Undercarriage Inspections
The purpose of this Safety Notice (SN) is to recommend that owners, operators and maintainers of Piper PA-28 and PA-32 aircraft (all models) carry out inspections of the nose and main undercarriage assemblies at the next routine maintenance inspection, following two recent accidents involving two different PA-28 aircraft.
Dated: May 2024

Safety Notice 2023/001 Updated
SN 2023/001 – Global Navigation Satellite System Outage Leading to Navigation / Surveillance Degradation.
This SN has been reissued to raise awareness, to advise Operators who may be impacted by the loss or degradation of GNSS signals, to update the affected areas and to include the newest information.
Dated: April 2024

SN-2021/006: General Aviation Aircraft Safety Harness Integrity
The purpose of this Safety Notice is to promote awareness and to provide guidance around the issues of harness integrity and degradation. The aim is to provide a greater definition of variables that affect harness integrity to air in inspection by authorised engineers/inspectors. Version 2 is published for routine amendments (mostly around consistency in wording post eu-exit) and to extend the applicability to include Part 21 aircraft.
Dated: April 2024

SN-2015/007: Use of Government/Military Aerodromes by Civil Aircraft Operators
The purpose of this Safety Notice is to remind operators that additional factors may need to be taken into account when contemplating operations at Government aerodromes. Version 2 is published to update advice.
Dated: March 2024

SN-2024/001: ROCC ‘Flight Safety Messages’ Requirement
The purpose of this Safety Notice is to remind ROCC holders of the requirement to pass urgent flight safety messages following an investigation of an incident by the Air Accident Investigation Branch (AAIB) and the subsequent discussions held between the AAIB and the CAA
Dated: January 2024

SN-2020/016: Requirement for Use of CAA-designated Examiners to Extend LAPL(H) Privileges
The purpose of this Safety Notice is to ensure safety within the Light Aircraft Pilot Licence Helicopter community, due to a number of incidents. The Designated Examiners’ List has been updated, thus superseding SN-2019/009.
Version 3 updates the Flight Examiner Contacts
Dated: October 2023

SN-2023/005: Remotely Piloted Aircraft Systems (RPAS) Geo-Awareness
The purpose of this Safety Notice is to highlight inaccuracies with RPAS manufacturers’ inbuilt Geo-Fencing/Awareness and to reinforce the RPAS Operators responsibilities according to UK Reg (EU) 2019/947 UAS.OPEN.050(5)
Dated: October 2023

SN-2023/004: Suspected Unapproved Parts – AOG Technics Limited
The UK CAA have been investigating the supply of a large number of Suspect Unapproved Parts, all of which were supplied through a UK based company, AOG Technics Limited, Nova North, 11 Bressenden Place, London, SW1E 5BY
Dated: August 2023

SN-2020/003: Carbon Monoxide Contamination Minimisation & Detection in General Aviation Aircraft
The purpose of this Safety Notice is to raise awareness of i) the hazards associated with carbon monoxide exposure, ii) the means of minimising the likelihood of carbon monoxide contamination and iii) to provide guidance on the use of carbon monoxide detectors in general aviation aircraft.
Version 2 made reference to the CO concentration check introduced with Part-ML and also updates regarding the practical CO detector trial run by the CAA in light of the COVID-19 outbreak.
Version 3 provides additional guidance on the use of commercial off the shelf carbon monoxide detectors in general aviation aircraft to protect pilots and passengers from CO. Additionally, this update includes some of the findings from the CAA 12-month study of low-cost active CO detectors, which concluded last year.
Dated: July 2023

SN-2021/017: Potential Interference Risk to Radio Altimeters from 5G Mobile Technology
The purpose of this Safety Notice is to offer guidance and information for operators regarding potential interference to the operation of radio altimeters from 5G mobile technology.
Version 3 is published to clarify the revised domestic requirements when operating into the contiguous United States of America.
Dated: June 2023

SN-2023/003: Risk of Controlled Flight into Terrain during 3D BARO-VNAV and 2D Approaches (Altimeter Setting Procedures)
The purpose of this Safety Notice is to draw renewed and refreshed attention to the risk of Controlled Flight into Terrain (CFIT) when flying instrument approach operations with the pressure altimeter sub-scale set to an incorrect pressure setting. This Safety Notice (SN) updates SN-2019/001 issued on 6 March 2019, which is hereby revoked.
Dated: April 2023

SN-2021/011: Awareness of Skill Fade and Suggested Mitigations
The purpose of this Safety Notice is to offer guidance about skill fade to those managing and supporting front-line workers who are expected to resume operations.
Version 2 is published to update wording to current working practices.
Dated: April 2023

SN-2023/002: Maintenance Programmes for Aircraft Used for Glider Towing
The purpose of this Safety Notice is to raise awareness of the challenges relating to Aircraft Maintenance Programmes (AMP) for aircraft involved in Glider Tug operations and similar types of unusual operations – where potentially higher cycle utilisation of engines and ancillary components may not be captured by manufacturer service bulletins or published recommended inspection periods.
Dated: April 2023

SN-2023/001: Global Navigation Satellite System Outage Leading to Navigation / Surveillance Degradation
This Safety Notice is issued to raise awareness of the issue of the loss or degradation of GNSS signals due to jamming or spoofing and to advise Operators who may be impacted.
This Safety Notice replaces SN-2022/002 which is revoked.
Dated: April 2023

SN-2020/005: Ageing Aircraft Component Reliability and Associated Acceptance of Replacement Parts
The purpose of this Safety Notice is to use a recent case to provide a reminder to the GA community both of the importance of component testing for old units and the caution required when sourcing and fitting replacements.
Version 2 updates 1.2 and 1.3.
Dated: March 2023

SN-2019/002: Protecting Final Reserve Fuel and The Minimum Fuel Declaration
The purpose of this Safety Notice is to clarify the procedures for protecting final reserve fuel, including usage of the MINIMUM FUEL declaration.
Version 3 has been published to update the contact e-mail address and document references
Dated: March 2023

SN-2017/002: Responsibilities of Operators, CAMOs,MOs Pilots of Ex-Military Aircraft with a CAA Permit to Fly
The purpose of this Safety Notice is to remind operators, Continuing Airworthiness Maintenance Organisations (CAMOs), Maintenance Organisations (MOs) and pilots of Ex-Military aircraft with a CAA Permit to Fly of their responsibilities with regard to correctly monitoring, on an ongoing basis, the airworthiness of these aircraft.
Version 2 is published to update paragraph 2.3.
Dated: March 2023

SN-2020/011: Human Factors Considerations During Covid-19 Restart And Recovery Activities
The purpose of this Safety Notice is to support the industry understand the impact of restart and recovery activities on their staff and the potential human factors risks they should be aware of and mitigating. As the aviation system continues to recover from the effects of the Covid-19 pandemic, it is important to consider the Human Factor related risks associated with these effects. Organisations and individuals should be aware of the factors that can affect human performance.
Version 2 published to reflect Applicability to All ATS.
Version 3 published to reflect updated contact e-mail address in 5.2.
Version 4 published to reflect recovery activities
Dated: February 2023

SN-2021/002: General Considerations for Managing Distractions During Aviation Activities
The purpose of this Safety Notice is to promote a systems perspective in managing distractions in aviation activities.
The PDF file on the left is a full page graphic of the appendix included in this Notice.
Version 2 gives updated wording to Paragraph 1.2.
Dated: February 2023

SN-2022/005: Commercial, Organisational and Client Pressure in Flight Operations
The purpose of this Safety Notice is to highlight the commercial, organisational and client pressure (hereafter referred to as commercial pressure) as a contributing factor to a number of aircraft incidents. Whether perceived or actual, this pressure can have a detrimental impact on key operational decisions, particularly in marginal conditions.
Dated: July 2022

SN-2022/004: North American P51 Mustang (All Marks) Undercarriage Leg Piivot Shafts
A number of North American P51 Mustang aircraft operating under CAP 632 are potentially affected by the following condition. Several instances of cracked main landing gear (MLG) pivot shafts have been found during undercarriage maintenance carried out on North American P51 Mustang aircraft.
The purpose of this Safety Notice (SN) is to highlight the issue to owners and operators of North American P51 Mustang aircraft, and to recommend carrying out inspections of the affected parts at the intervals stipulated in the SN or after a heavy landing incident.
Dated: June 2022

SN-2022/003: Identification of Critical Parts in Operators Maintenance Programmes
The purpose of this Safety Notice is to recommend to owners, operators and airworthiness organisations to identify Critical Parts in their maintenance programmes to (1) assist in establishing the effectiveness of their AMP and (2) to enable easy identification of removal of life limited critical parts for the purpose of Occurrence Reporting.
Dated: April 2022

SN-2022/002: Global Navigation Satellite System Outage Leading to Navigation/Surveillance Degradation
The purpose of this Safety Notice is to raise awareness of the issue and to advise Operators who may be impacted by the loss or degradation of GNSS signals.
Dated: March 2022

SN-2022/001: Adjustable Seats in General Aviation Aircraft
The purpose of this Safety Notice is to remind general aviation pilots of the importance of checking that all occupied seats are securely locked in position prior to departure and any secondary locking mechanisms are correctly used, particularly after any seat position adjustment.
Dated: February 2022

SN-2021/017: Potential Interference Risk to Radio Altimeters from 5G Mobile Technology
The purpose of this Safety Notice is to offer guidance and information for operators regarding potential interference to the operation of radio altimeters from 5G mobile technology.
Version 2 is published to clarify the required actions when flying in areas where restrictions may be in place.
Dated: January 2022

SN-2021/016: Rudder Lower Pintle Pivot Pin British Aircraft Corporation 167 Strikemaster and Jet Provost (All Marks)
The purpose of this Safety Notice is to highlight this particular deficiency in the rudder lower pintle pivot pin assembly and recommend that owners and operators of BAC 167 Strikemaster and Jet Provost aircraft carry out inspection of the affected pintle pin and nut at the next scheduled maintenance, necessitating removal of the aircraft rudder assembly and engine jet pipe. Subsequent inspections should be carried out annually during scheduled maintenance activities.
Dated: September 2021

SN-2021/15: Engine Valve Springs – Rolls-Royce and Packard Merlin (All Marks)
The purpose of this Safety Notice (SN) is to highlight to owners and operators of Ex-Military (CAP 632) aircraft powered by all Rolls Royce/Packard Merlin series engines, to carry out inspections of the affected parts at the next scheduled maintenance activities.
Dated: July 2021

SN-2018/004: Emergency Parachutes in Ex-Military Jets
The purpose of this safety notice is to remind the owners and operators of Ex-Military Jets that they ensure, where the ejection seats have been disabled, the alternative method of emergency egress has been incorporated in the pilot information, the procedure has been verified and that all the required equipment is maintained in a serviceable condition.
Version 2 of this Safety Notice has been published to add clarification. Where AAES systems have been rendered inert (e.g. by removal of time-expired pyrotechnic cartridges), an aircraft level modification must be approved.
Dated: June 2021

SN-2021/014: Pitot Blockage Events
This Safety Notice is published to raise industry awareness of pitot blockage events.
Dated: June 2021

SN-2021/013: Undercarriage Leg Support Bracket Avions Max Holst MH.1521 “Broussard” (All Marks)
The purpose of this Safety Notice is to highlight this particular event and recommend that owners and operators of Avions Max Holste MH1521 “Broussard” carry out inspection of the affected brackets, with subsequent inspections carried out annually during scheduled maintenance.
Dated: June 2021

SN-2019/006: Components Strips Report
The purpose of this Safety Notice is to advise the owners and the Continuing Airworthiness Management Organisations (CAMOs), who are responsible for the effectiveness of the maintenance programme, to request component strip reports from maintenance organisations and Original Equipment Manufacturers (OEMs) so that they can successfully analyse the effectiveness of their Aircraft Maintenance Programme (AMP).
Version 2 is published for editorial changes only.
Dated: June 2021

SN-2021/012: Operational Resilience – Aviation industry recovery post COVID-19
The purpose of this Safety Notice is to highlight actions which should be considered to mitigate against the risks associated with the increase in aviation activity over the coming months, combined with the impact of the COVID crisis.
Dated: May 2021

SN-2017/004: Balloon Operations – Safety Matters
The purpose of this Safety Notice is to provide balloon operators and pilots with the latest guidance concerning balloon operations with particular emphasis on passenger-related matters and advice on pilot training and pilot decision-making.
This Safety Notice supersedes SN-2011/018
Version 2 is published to update advice.
Dated: May 2021

SN-2021/010: COVID-19 – Flying Display Season 2021
The purpose of this Safety Notice is to provide details of enhanced currency requirements for Display Pilots, prior to their first display flying activity in Display Season 2021 (DS 21).
Dated: April 2021

SN-2021/005: Lockable Gascolator Drain Valves on General Aviation Aircraft
The purpose of this Safety Notice is to notify General Aviation operators of the risk of engine power loss caused by lockable gascolator fuel drain valves being inadvertently left latched open.
Version 2 introduces two new recommendations. The first (paragraph 2.3) is to ensure that placarding is only present on aircraft fitted with lockable drain valves. The second (paragraph 2.4) recommends updating personal checklists/notes with a specific check item for lockable drain valves, until such time as the lockable drain valve is replaced with a non-lockable alternative.
Dated: April 2021

SN-2021/009: General Aviation Roadmap Out of Lockdown – Resumption of Flying and Access to Instructional Flights
The purpose of this Safety Notice is to highlight and provide guidance to GA pilots on the issue of the two-week gap between the date on which non-professional GA pilots are permitted to resume flying, and when they will have the ability to fly with an instructor.
Dated: March 2021

SN-2021/008: Fatigue Management – Guidance for Aerodrome Operators and Third-Party Operators During Covid-19 Changing Conditions
The purpose of this Safety Notice is to give fatigue management guidance to Aerodrome Operators and Third-Party Operators During Covid-19 Changing Conditions.
Dated: March 2021

SN-2021/007: Airworthiness of Aging Ex-Military Aircraft
The purpose of this Safety Notice is to raise awareness of key airworthiness topics in relation to the operation and maintenance of Ex-Military aircraft.
Dated: March 2021

SN-2021/006: Non-Part 21 General Aviation Aircraft Safety Harness Integrity
The purpose of this Safety Notice is to promote awareness and to provide guidance around the issues of harness integrity and degradation. The aim is to provide a greater definition of variables that affect harness integrity to air in inspection by authorised engineers/inspectors.
Dated: February 2021

SN-2021/004: Update to the introduction of UK Regulation No. 2018/1042 of 23 July 2018 and 2020/745 of 4 June 2020 amending Regulation No. 965/2012 as retained and amended in UK domestic law under the European Uni
The purpose of this Safety Notice is an update to SN 2020/009 to highlight that the European Union Withdrawal act (2018) has brought across all EU legislation into UK domestic law that were in force and applicable on or before 31 December 2020. Commission Implementing Regulation (EU) 2020/745 of 4 June 2020 amended the original applicable dates of Regulation (EU) 2018/1042 of 14 August 2020 by introducing a delay of 6 months to 14 February 2021, as a consequence of the COVID-19 crisis. The result is that this applicability date for the regulation fell beyond the 31 December 2020 and has not come across as part of the Withdrawal Act. This will now be addressed, at a later date to be determined, in discussion under the UK’s Rule Making Programme and amendment to the retained air regulation.
Dated: January 2021

SN-2021/003: Fatigue Management – Guidance for AOC Holders During Covid-19 Changing Conditions
This Safety Notice addressed consideration the effects of the COVID-19 pandemic on the fatigue management approaches AOC holders are using to support flight and cabin crew.
Dated: January 2021

SN-2021/001: Airborne Flying Display Directors – New Requirements
The purpose of this Safety Notice is to ensure that all Display Pilots are aware that there is a new requirement to complete a mandatory online Airborne Flying Display Director (AFDD) course should you wish to act in the role of AFDD from the beginning of 2021
Dated: January 2021

SN-2020/019: COVID-19 – Flight Information Service Officers – Medicals
The purpose of this Safety Notice is to provide an extension to FISOs medical declaration privileges, (as per that given to pilots), for 45 days. Due to the additional lockdown that came into force, FISOs are having difficulties getting to see their GPs in order to get the required declaration signed off, this will therefore allow flexibility into the New Year.
Dated: December 2020

SN-2020/018: Avoidance of Loss of Control In-flight Pilot Awareness of Aircraft State, During Periods of Multiple System Malfunctions and Flight Control Issues
The purpose of this Safety Notice is to highlight causal factors associated with recent loss of control accidents, specifically aircraft system knowledge and technical competence in dealing with multiple system malfunctions combined with possible unexpected flight control inputs, during a period of cognitive degradation associated with ‘surprise and startle effects’.
Version 2: This reflects an update to the Applicability for Flight Operations to ‘All AOC Holders’.
Dated: December 2020

SN-2020/017: Laser Attacks
The purpose of this Safety Notice is:
. to update industry with the latest information concerning laser attacks and their reporting;
. to reinforce earlier advice concerning actions to be taken during and after an attack by lasers;
. to provide advice and guidance concerning eye health following such an attack; and
. to provide useful sources of information to help educate and train operators, aircrew, ATS personnel and airside drivers about the hazards to aircraft in flight, ATC/AFIS towers or airfield vehicles when being targeted by a laser or multiple lasers.
Version 2: The Safety Notice has been amended to highlight the requirements for Mandatory Occurrence Reporting.
Dated: October 2020

SN-2019/009: Requirement for Use of CAA-Designated Examiners to Extend LAPL(H) Privileges
The purpose of this Safety Notice is to ensure safety within the Light Aircraft Pilot Licence Helicopter community, due to a number of incidents
Dated: October 2020

SN-2020/015: Effective Change Management for Organisations During Covid-19
The purpose of this Safety Notice is to promote the importance of utilising a Safety Management System to manage change; it makes recommendations on approaches to take, particularly as restarts are now commencing.
Dated: August 2020

SN-2020/014: The Effect On Aviation Mental Health From the Covid-19 Pandemic and Return to Re-defined ‘Normal’ Flight Operations
The purpose of this Safety Notice is to support the industry to understand the impact of the Covid-19 pandemic on the health and wellbeing of all aviation safety sensitive personnel involved in flight operations and the potential human performance risks they should be aware of and should be managing.
Dated: July 2020

SN-2020/013: Returning Aircraft to Service from ‘Extended Parking’
The purpose of this Safety Notice is to advise operators, and all concerned of measures and precautions to be considered to safely return aircraft to normalised operation following the COVID-19 shut-down.
Dated: July 2020

SN-2020/012: Operational Measures to Prevent the Spread of Coronavirus COVID-19 Virus Infection
The purpose of this Safety Notice is to advise Operators about the requirements and methods for cleaning and disinfecting aircraft in order to minimise the risks of transmission of the SARS-CoV-2 virus to aircraft passengers, aircrew and other aviation personnel from potentially contaminated aircraft.
Dated: July 2020

SN-2020/011: Human Factors Considerations During Covid-19 Restart Activities
The purpose of this Safety Notice is to support the industry understand the impact of restart activities on their staff and the potential human factors risks they should be aware of and mitigating.
Dated: July 2020

SN-2020/010: Unmanned Aircraft – Responses to abnormal operations and in-flight failures
The purpose of this Safety Notice is to provide additional guidance to remote unmanned aircraft may only fly the aircraft if satisfied that the flight can safely be made.’ (Air Navigation Order Article 94(2)). The remote pilot’s ability to identify and respond correctly to unexpected in-flight emergencies, system failures or abnormal circumstances has always been integral to lawful flight
Dated: June 2020

SN-2020/009: Postponement of Commission Regulation (EU) No. 2018/1042 of 23 July 2018 amending Regulation (EU) No. 965/2012
The purpose of this Safety Notice is to highlight, as a result of the COVID-19 crisis, that the European Commission has given notice of their intention to postpone the implementation of certain Implementing Regulations scheduled for 2020. Commission Regulation (EU) No. 2018/1042 of 23 July 2018 amending Commission Regulation (EU) No. 965/2012 (EASA Air Operations Regulation) is expected to have its implementation delayed by six months from 14 August 2020. The amending Regulation enabling this should be published shortly.
Dated: May 2020

SN-2020/008: COVID-19 – Flying Season 2020
The purpose of this Safety Notice is to provide details of the extension of the relevant currency requirements detailed in CAP 403 and CAP 1724 for Display Pilot Authorisations (‘DAs’), Display Authorisation Evaluators (‘DAEs’) and Flying Display Directors (‘FDDs’).
Dated: May 2020

SN-2020/007: COVID-19 Flight Information Service Officers
The purpose of this Safety Notice is to permit alleviation to the FISO requirements relevant to medical and recency.
Dated: April 2020

SN-2020/006: Initial Unit Endorsement (UE) Assessment and Examination Validations, Conducted by an Assessor Authorised by the CAA
The purpose of this Safety Notice is to permit units to conduct specific initial UE assessments and examination validations with a Unit Assessor, in appropriate cases.
Dated: March 2020

SN-2020/004: Operational Measures to Prevent the Spread of Coronavirus CoVID-19 Virus Infection
The purpose of this Safety Notice is to strongly recommend that CAT operators implement a cleaning and disinfectant regime.
Dated: March 2020

SN-2020/002: Small Unmanned Aircraft – Overflight of Uninvolved People
The purpose of this Safety Notice is to provide additional guidance to remote pilots in the form of suggested best practice when considering flight over people in accordance with articles 95(2)(d) or 95(3) of the ANO. It is also intended to remind and assist remote pilots in meeting the requirement in law that states that they must be “reasonably satisfied that a flight can be safely made” (ANO article 94(2)).
Dated: January 2020

SN-2020/001: Small Unmanned Aircraft – Water Ingress
The purpose of this Safety Notice is to remind pilots of the requirement in law that they must be reasonably satisfied that a flight can be safely made (ANO 2016 article 94(2).
Dated: January 2020

SN-2019/008: Helicopter Operations – Guidance on Aerodrome Operating Minima for IFR Departures
The purpose of this Safety Notice is to provide guidance on aerodrome operating minima and the aircraft commander/PIC’s responsibilities for helicopter flights, particularly other than CAT/PT, departing IFR from aerodromes not equipped for instrument departures. This SN supersedes SN 2016/001.
Dated: November 2019

SN-2019/007: Helicopter Operations Flight Planning and Safe Flight Execution
The purpose of this Safety Notice is to reinforce to operators, trainers and pilots the essential need for detailed and appropriate pre-flight planning and risk assessment before conducting any flight but in particular those intended to be conducted under the Visual Flight Rules (VFR). The plan then needs to be executed accordingly. This SN supersedes SN 2017/003.
Dated: November 2019

SN-2019/005: Avoidance of Loss of Control In-Flight – Flight Crew Training
The purpose of this Safety Notice is to raise awareness for operators and training organisations to urgently review their flight crew training with a view to enhancing awareness of an aircraft trim state, manual flight skills and intervention of automated trim systems.
Dated: July 2019

SN-2019/004: Use of the Fuel Pump Primer in an Emergency: Yak 50/52 Aeroplanes
The purpose of this Safety Notice is to provide advice to pilots on the use of the fuel pump primer in the event of an emergency, such as loss of fuel pressure or engine power during flight.
Dated: June 2019

SN-2019/003: Non-EASA General Aviation Aircraft Safety Harness Integrity
The purpose of this Safety Notice is to improve on the guidance already promulgated in SN2018/005 as a result of more liaison with industry experts. The aim is to provide a greater definition of variables that affect harness integrity to aid in inspection by authorised engineers/inspectors.
Dated: March 2019

SN-2019/002: Protecting Final Reserve Fuel and The Minimum Fuel Declaration
The purpose of this Safety Notice is to clarify the procedures for protecting final reserve fuel, including usage of the MINIMUM FUEL declaration.
Version 2 has been published to update document references
Dated: March 2019

SN-2019/001: Risk of Controlled Flight into Terrain During 3D BARO-VNAV and 2D Approaches (Altimeter Settings)
The purpose of this Safety Notice is to draw attention to the risk of Controlled Flight into Terrain (CFIT) when flying approaches with an incorrect Altimeter Subscale setting.
Dated: March 2019

SN-2018/011: Small Unmanned Aircraft DJI Battery TB50 and TB55 In-Flight Power Failures
This Safety Notice provides updated instructions and guidance regarding the DJI TB50/55 series of batteries and supersedes SN-2018/010.
The text highlights the updated battery firmware that has was released by the manufacturer on 16 November to correct previous instances where power has been unexpectedly lost. The aircraft operating restrictions that must now be observed are dependent on whether or not the manufacturer’s recommended updates have been successfully installed.
Dated: November 2018

SN-2018/009: Small Unmanned Aircraft – DJI Battery TB50 and TB55 In-Flight Power Failures
This SN gives guidance on DJI Battery TB50 and TB55 In-Flight Power Failures that supersedes SN-2018/008.
Version 2 has been issued to clarify queries from industry relating to the suspension of permissions and exemptions issued to operators of the affected DJI platforms until further notice by the CAA.
Dated: November 2018

SN-2018/008: Small Unmanned Aircraft – DJI Matrice 200 Series In-Flight Power Failures
The purpose of this Safety Notice is to raise the awareness for DJI Matrice 200 series users of a small number of in flight power failures which have led to a complete power loss and the aircraft have fallen to the ground. The SN gives guidance on how to complete the latest firmware update and also suspends any permissions based on an Operational Safety Case.
Dated: October 2018

SN-2018/007: The Dangers of Operating Outside the Privileges of Your Pilot’s Licence
Licence Privileges – Following a number of incidents, some fatal, the CAA has issued a Safety Notice relevant to licence privileges.
Dated: October 2018

SN-2018/006: Boeing A75 Series FAA Unapproved Parts Notification
The purpose of this Safety Notice is to draw attention to the FAA Unapproved Parts Notification relating to Dusters and Sprayers Supply, Inc. wing repair ribs and stringer segments for the Boeing A75 Series.
Dated: September 2018

SN-2018/005: Non-EASA General Aviation Aircraft Safety Harness Integrity
The purpose of this Safety Notice is to provide advice regarding safety harness maintenance tasks for Non-EASA GA aircraft, identifying criteria to consider when establishing the integrity of the aircraft lap and shoulder harnesses, when undertaking the necessary routine inspection.
Dated: July 2018

SN-2018/003: FAA Flight Prohibition in the Use of Supplemental Helicopter Harnesses
The purpose of this Safety Notice is to advise helicopter operators and owners of the FAA Emergency Order of Prohibition. It is recommended that operators and owners review their current procedures for flights involving the opening or removal of doors.
Dated: March 2018

SN-2018/002: Maintenance and Overhaul of Piston Engines
The purpose of this Safety Notice is to remind Individuals and organisations maintaining historic piston engines of maintenance best practice.
Dated: February 2018

SN-2018/001: Restricting the Operation of Ex-Military Jet Aircraft at Flying Displays
The scope of this SN applies to all ex-military jet aircraft operated under CAA CAP 632 ‘Operation of Permit-to-Fly Ex-Military Aircraft on the UK Register’ and civilian foreign registered ex-military jet aircraft. Other types of aircraft are unaffected.
Dated: February 2018

SN-2017/005: Carriage of Assistance Dogs in the Aircraft Cabin
The purpose of this Safety Notice is to provide airline operators with the latest guidance material regarding the carriage of recognised assistance dogs. This SN supersedes SN-2015/001.
Dated: June 2017

SN-2017/003: Helicopter Operations Flight Planning and Safe Flight Execution
The purpose of this Safety Notice is to reinforce to operators, trainers and pilots the essential need for detailed and appropriate pre-flight planning and risk assessment before conducting any flight but in particular those intended to be conducted under the Visual Flight Rules (VFR). The plan then needs to be executed accordingly.
This SN supersedes SN 2016/002.
Dated: April 2017

SN-2017/002:Responsibilities of Operators, CAMOs,MOs Pilots of Ex-Military Aircraft with a CAA Permit to Fly
The purpose of this Safety Notice is to remind operators, Continuing Airworthiness Maintenance Organisations (CAMOs), Maintenance Organisations (MOs) and pilots of Ex-Military aircraft with a CAA Permit to Fly of their responsibilities with regard to correctly monitoring, on an ongoing basis, the airworthiness of these aircraft.
Dated: March 2017

SN-2017/001: Department for Transport Security Advice to Air Operators
The purpose of this Safety Notice (SN) is to remind or alert UK aircraft operators to the international security threat and risk information available from the Department for Transport (DfT). This SN supersedes SN-2014/009.
Dated: January 2017

SN-2016/006: CAA Requirements for Check Flights
The purpose of this Safety Notice is to detail the CAA policy regarding the requirements for check flights for UK registered aircraft. This Safety Notice supersedes SN-2013/011.
Dated: August 2016

SN-2016/005: Restricting the Operation of Aircraft at Flying Displays, Air Races and Contests
The purpose of this Safety Notice is to notify industry of the revocation of paragraph 4 (Flying Displays, Air Races and Contests) of ORS4 No 1124 (Standardised European Rules of the Air – Exceptions to the Minimum Height Requirements).
NOTE: As of 18 August 2016, ORS4 No 1124 has be revoked and replaced with ORS4 No 1174.
Dated: June 2016

SN-2016/004: Dangerous Goods Training Requirements Applicable to Fixed Base Operator Personnel
The purpose of this Safety Notice is to remind Fixed Base Operators of the requirements for the provision of dangerous goods training to be provided to personnel involved with passenger handling and the loading and unloading of cargo and baggage.
Dated: April 2016

SN-2016/003: Level Busts: Hazards and Defences
The purpose of this SN is to alert industry to the heightened risk of level busts during periods of low atmospheric pressure; highlight the main causes of level busts and defences to employ against them; provide advice and guidance on best practice procedures to avoid level busts; and encourage operators to review their Standard Operating Procedures (SOPs) to ensure their defences are robust, and the risks of level busts are captured in their Risk Assessment. This Safety Notice (SN) supersedes SN-2014/004.
Dated: April 2016

SN-2016/002: Helicopter Operations Flight Planning and Safe Flight Execution
The purpose of this Safety Notice is to reinforce to operators, trainers and pilots the essential need for detailed and appropriate pre-flight planning and risk assessment before conducting any flight but in particular those intended to be conducted under the Visual Flight Rules (VFR). The plan then needs to be executed accordingly. This Safety Notice supersedes SN-2014/008.
Dated: April 2016

SN-2016/001: Private and Aerial Work Helicopter Operations – Guidance on Aerodrome Operating Minima for IFR Departures
The purpose of this Safety Notice is to provide guidance on aerodrome operating minima and the aircraft commander’s responsibilities for private helicopter flights departing IFR from aerodromes not equipped for instrument departures. This Safety Notice supersedes SN-2014/006.
Dated: April 2016