Aviation Safety Letter: Issue 2/2021

Previously, the ASL was only available in PDF, but starting with issue 3/2019, it’s now also available in HTML. This change makes it easier to share articles with others—but more importantly, will make it easier to search for specific topics.

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Have a great aviation photo? Send it to TC.ASL-SAN.TC@tc.gc.ca for a chance to be featured on the cover page of an upcoming issue of the ASL!

Fit for flight? A primer on maintaining your AULA airworthiness, and successfully transferring ownership

Advanced ultra-light aeroplane (AULA), Fit for flight form (FFF), prospective seller and buyer.

Open-water swimming

Flying over open bodies of water for take-off and landing, be vigilant.


Coming into force dates for new flight crew fatigue management rules

Although the new regulations are already in force for subparts 702 and 705, the remaining subparts (703 and 704) are still operating under the prescriptive rules that were in force on December 11, 2020. The new rules for 703 and 704 come into force on December 12, 2022.

The Civil Aviation Daily Occurrence Reporting System (CADORS)

Why CADORS, how is the information used, where does it come from, what does it tell us.


Design eye reference point in light aircraft

Human factors element in aircraft design, correct DERP, pilot has best view of both instruments and the outside world.

ASL instructor’s corner

Share past instructing/teaching experiences, tips to increase aviation safety.


Safe egress training during the pandemic

Fresh and up-to-date information will be available shortly online, AES Dry Egress, practice seaplane challenges such as rough, windy or calm waters, review your POH in advance, training should be considered invaluable.

TSB Final Report A19Q0146—Collision with terrain

Float-equipped Cessna U206G aircraft, fuel management, home-made dipstick, ensure markings are calibrated and documented based on parameters specific to the aircraft, wear shoulder harnesses when aircraft is equipped with them. (See PDF for condensed version)


TSB Final Report A08O0029—Controlled flight into terrain

Sikorsky S-76A, visual spatial disorientation, replacement of the existing barrel nut lap belt attachment with a steel shackle. (See PDF for condensed version)

TSB Final Report A19O0103—Wheels-down water landing

Cessna A185E, each occupant has their own seat, use the available restraint system, aircraft must have enough personal flotation devices on board for all occupants, underwater egress training for pilots. (See PDF for condensed version)



The Aviation Safety Letter is published by Transport Canada, Civil Aviation. The contents do not necessarily reflect official government policy and, unless stated, should not be construed as regulations or directives.

Letters with comments and suggestions are invited. All correspondence should include the author’s name, address and telephone number. The editor reserves the right to edit all published articles. The author’s name and address will be withheld from publication upon request.

Please address your correspondence to:

Jim Mulligan, Editor
Aviation Safety Letter
Transport Canada (AARTT)
330 Sparks Street, Ottawa ON K1A 0N8
E-mail: TC.ASL-SAN.TC@tc.gc.ca
Tel.: 613-957-9914
Internet: canada.ca/aviation-safety-letter


Some of the articles, photographs and graphics that appear in the Aviation Safety Letter are subject to copyrights held by other individuals and organizations. In such cases, some restrictions on the reproduction of the material may apply, and it may be necessary to seek permission from the rights holder prior to reproducing it. To obtain information concerning copyright ownership and restrictions on reproduction of the material, please contact the Aviation Safety Letter editor.

Note: Reprints of original Aviation Safety Letter material are encouraged, but credit must be given to Transport Canada’s Aviation Safety Letter. Please forward one copy of the reprinted article to the editor.

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Sécurité aérienne — Nouvelles est la version française de cette publication.

© Her Majesty the Queen in Right of Canada, as represented by the Minister of Transport (2021).

ISSN: 0709-8103
TP 185E