Aviation Safety Letter: Issue 4/2023

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.

If you don’t already receive an ASL e-bulletin notification email, 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!

The Impact of Literacy on Aviation

Literacy is more than just words and pictures. It constructs our society, our flight schools, our flight operations and our air operators.

NAV CANADA’s “Eyes in the Skies and on the Ground”

The purpose of the ASL instructor’s corner is for instructors to share past instructing/teaching experience with the ASL readership.


Aviation Safety Letter article submission

Share your expert knowledge, promote aviation safety.

Instructor’s corner article submission

The purpose of the ASL instructor’s corner is for instructors to share past instructing/teaching experience with the ASL readership.


Best Practices for Transitioning to an Ultralight Aeroplane

If you’ve decided to start flying ultralights, this article includes information that will help you become a safe and competent ultralight pilot, regardless of what planes you’re used to.

Introduction to Threat and Error Management

Threat and error management (TEM) is an overarching safety concept regarding aviation operations and human performance. TEM is not a revolutionary concept, but one that has evolved gradually as a consequence of the constant drive to improve the margins of safety in aviation operations through the practical integration of human factors knowledge.


TSB Final Report A21Q0087—Runway overrun

Pilatus PC-12/47E aircraft (PC-12 NG), high-speed final approach, authority gradient, landing gear extended, wet runway, aircraft overran the runway. (See PDF for condensed version).

Poster—Aviation safety starts here

Pre-flight planning.



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.

Articles, comments and suggestions are invited. The editor reserves the right to edit all published articles. The author’s name will be withheld from publication upon request.

Please send your comments, suggestions or articles to:

Jim Mulligan, Editor
Aviation Safety Letter
E-mail: TC.ASL-SAN.TC@tc.gc.ca
Tel.: 343-553-3022
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.

Electronic distribution:
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To purchase a Print-on-Demand (POD) version (black and white), please contact:

The Order Desk
Transport Canada
Toll-free number (North America): 1-888-830-4911
Local number: 613-991-4071
E-mail: MPS1@tc.gc.ca

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

© His Majesty the King in Right of Canada, as represented by the Minister of Transport (2023).

ISSN: 0709-8103
TP 185E