Air transportation safety concerns and advisories
Safety concerns provide a marker to the industry and the regulator that the Board has identified a safety deficiency for which it does not yet have sufficient information to make a recommendation. As more data and analysis becomes available, and if the safety deficiency is found to be systemic and not redressed, the safety concern may lead to a recommendation. Safety concerns are usually communicated in final investigation reports.
Safety information letters
The TSB sends safety information letters to regulatory and/or industry stakeholders to advise them of potentially unsafe acts or conditions identified during an investigation that pose low risks and do not require immediate remedial action. The letters aim to promote safety or clarify issues that a stakeholder is already examining, and are sent before the investigation has been completed. Those that do not contain privileged or proprietary information are posted here.
Safety advisory letters
Safety advisory letters are concerned with safety deficiencies that pose low to medium risks, and are used to inform regulatory or industry stakeholders of unsafe conditions. A safety advisory letter suggests remedial action to reduce risks to safety.
|Product||Date issued||Subject||No.||To||Related report|
|Safety information letter||2020-07-29||Challenger 605 Series Flap System Inspection Interval and Challenger CL60 Series Cross Fleet Product Improvement||A20W0016-D1-L1||Bombardier Aviation||A20W0016|
|Safety advisory letter||2020-11-09||Cessna 120 and 140 aircraft lap belt centre mounting bracket failure||A20P0071-D4-A1||Civil Aviation, Transport Canada||A20P0071|
|Safety advisory letter||2020-11-30||Inaccurate airborne status transmitted by transponders and its effect on runway monitoring and conflict alert systems||A20O0029-D1-A1||Civil Aviation, Transport Canada||A20O0029|
|Safety information letter||2019-12-16||De Havilland Aircraft of Canada DHC-8-102 – Aircraft Flight Manual / Quick Reference Handbook – Emergency Procedure (WT ON WHEELS)||A19C0136-D1-L1||Civil Aviation, Transport Canada||A19C0136|
|Safety advisory letter||2019-06-11||De Havilland Aircraft of Canada DHC-8-400 – Failure of the alternating current power feeder connectors||A19W0001-D1-A1||Civil Aviation, Transport Canada||A19W0001|
|Safety advisory letter||2020-03-16||Viking Air Ltd. de Havilland DHC-3 wing strut attachment inspections||A19C0138-D1-A1||Civil Aviation, Transport Canada||A19C0138|
|Safety advisory letter||2020-02-13||Failure of the Kannad 406 AF-compact emergency locator transmitter switch locking system||A19Q0109-D1-A1||Civil Aviation, Transport Canada||A19Q0109|
|Safety advisory letter||2019-08-13||Federal Aviation Administration Airworthiness Directive 2015-08-04 – Reliability of Main Spar Wing Lift Strut Assembly Inspection – Punch Test Method||A19C0026-D1-A1||Civil Aviation, Transport Canada||A19C0026|
|Safety advisory letter||2018-11-15||Quad City Challenger II Advanced Ultralight – Bracket Failure||A18O0106-D1-A1||Civil Aviation, Transport Canada||A18O0106|
|Safety advisory letter||2019-02-18||Cessna 206 emergency exit – Blocked double cargo door with flaps extended||A18W0129-D1-A1||Transport Canada||A18W0129|
|Safety advisory letters||2018-07-12||Aircraft landing on the closed portion of reduced-width runways at airports where repair and maintenance work is being conducted||A18Q0094-D1-A1||Transport Canada, Civil Aviation||A18Q0094|
|Safety advisory letter||2018-06-01||Fairchild SA227-AC Metro III – Aircraft Flight Manual – Emergency Procedures (Low oil pressure indication)||A17C0132-D1-A1||Transport Canada, Helicopter Association of Canada, Air Transport Association of Canada, and Northern Air Transport Association||A17C0132|
|Safety advisory letters||2017-12-21||Unsecured cargo and unrestrained passengers in helicopters||A17O0264-D1-A1||Transport Canada, Helicopter Association of Canada, Air Transport Association of Canada, and Northern Air Transport Association||A17O0264|
|Safety information letter||2012-04-12||Inadequate Guidance for FDR Maintenance||A11H0002-D2-L1||Transport Canada||A11H0002|
|Safety advisory letter||2012-02-08||IFR separation in Class D airspace||A11H0002-D2-A1||1 Canadian Air Division Headquarters||A11H0002|
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