Aviation Safety Letter: Issue 2/2020

The Aviation Safety Letter (ASL) is going through some changes. 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.

You’ll notice that the ASL’s look has been updated. If you receive an ASL e-bulletin notification email, you’ll soon find an improved email with links directly to content. If you aren’t subscribed, we encourage you to sign-up online.

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!

Aviation Safety Letter survey: We want to hear from you!

Reader feedback, improve the ASL, anonymous, 5 minutes to complete.

Risk homeostasis: Reducing risk does not necessarily reduce accidents

Theory, acceptable level of risk, Dr. Gerald Wilde, target level of risk, modify behavior, increase exposure to risk, flying is risky.


Aviation research at the Advanced Cognitive Engineering Lab goes virtual!

Virtual and full-scale flight simulations, seeking volunteers, two studies: CANFLY and Visual Illusions in Virtual Reality Flight Simulation, 3D VR systems, comfort of your own home.

Drone safety is everyone’s responsibility!

Fly safely and follow the rules, between 250 grams and 25 kilograms (kg), possess either a basic or advanced drone pilot certificate to fly, below 400 feet (ft), and away from bystanders, emergency operations, advertised events, and airports.


Aviation and COVID-19: Measures, guidance, and support

TC recognizes the challenges, measures in place to provide some relief.

TSB Final Report A19W0095—Collision with water

Cessna 150J aircraft, aerodynamic stall and left-hand spin. (See PDF for condensed version)


TSB Final Report A19W0063—Loss of control and collision with terrain after takeoff

Cessna 170B, during takeoff controllability issues were encountered, use of flaps at higher-density altitudes is not recommended, follow aircraft manufacturers’ recommendations. (See PDF for condensed version)

TSB Final Report A19A0052—Collision with water

Float-equipped de Havilland DHC-2 MK I Beaver aircraft, wreckage has not been found, TSB is unable to conduct a full investigation. (See PDF for condensed version)


TSB Final Report A19C0053—Collision with terrain

Float-equipped Piper PA-12S Super Cruiser, VFR flight, gusty surface winds, moderate turbulence, TSB Aviation Safety Study SSA93001. (See PDF for condensed version)

Poster: VFR Flight into adverse weather can be deadly

VFR flight, adverse weather, decision-making.



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: www.tc.gc.ca/ASL


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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Toll-free number (North America): 1-888-830-4911
Local number: 613-991-4071
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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 (2020).

ISSN : 0709-8103
TP 185E