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The Aviation Safety Letter (ASL) is published quarterly by Transport Canada, Civil Aviation. The ASL includes articles that address aviation safety from all perspectives, such as safety insight derived from accidents and incidents, information tailored to the needs of maintenance and servicing personnel.

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Managing Diversions: the Cognitive Connection

  • Simple, useful tips for aiding short-term memory during busy periods of flight.
  • Mentally preparing yourself to accept Diversions as a positive, acceptable action in deteriorating weather.
  • Steps to help you decide when it's time to Divert.
  • The relationship between Pilot Expertise/Experience & early acceptance of the need to divert.
  • Investigating the factors associated with recognizing the option of Diversion.
  • Critically evaluating your cognitive piloting skills - plus uncomplicated ways to improve them.

Cannabis Legalization

  • Why the use of cannabis is still a disqualifying factor for obtaining a medical certificate to fly aircraft.
  • Explaining why taking cannabis, and products containing it, across any international border is illegal (including Cannabis for medical purposes).
  • Warning that pilots, or other crew members, may be denied entry to a foreign country, including the United States, if they have previously used cannabis products - even if these products were used legally in Canada.

General Aviation Safety Campaign: One-Year Update

Continued International Engagement for General Aviation

  • Update on Transport Canada's improvement of Connections with their counterparts in other countries around the world (particularly Australia & New Zealand).

Aircraft Group Number (AGN)

  • Detailed explanation of the purpose of the AGN in future editions of the CFS.

TSB Final Reports

A17Q0050 - Collision with Wires

  • Final report on the probable causes of a Piper PA-31striking power lines with fatal results.
  • Examination on the risks of low-flying.

A18W0025 - Collision with Terrain

  • While dealing with the crash on takeoff of an Airbus Helicopter, the importance of wearing a helmet in "roll-over" accidents is worth consideration by pilots flying light aircraft vulnerable to this type of incident.

A18W0054 - Engine PowerLoss and Forced Landing

  • Final Report on the highly-publicized forced landing of a Piper PA-31 on a street in Calgary
  • The investigation revealed that the forced landing was due to fuel tank mismanagement. Although the aircraft appeared to be out of fuel, there was still approximately 40 U.S. gal. in each inboard fuel cell.

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We would like to acknowledge the financial support of the Government of Canada for this initiative through the Search and Rescue New Initiative Fund (SAR NIF).