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Gust lock

Article Id: WHEBN0012548423
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Title: Gust lock  
Author: World Heritage Encyclopedia
Language: English
Subject: 1952 Moses Lake C-124 crash, Dan-Air Flight 0034, 1947 KLM Douglas DC-3 Copenhagen accident, Boeing B-17 Flying Fortress, Messerschmitt Me 163 Komet
Collection: Aircraft Controls
Publisher: World Heritage Encyclopedia

Gust lock

Gust lock on a rudder.

A gust lock on an aircraft is a mechanism that locks control surfaces in place preventing random movement and possible damage of the surface from wind while parked. Gust locks may be internal or external.


A gust lock can pose a serious safety hazard if its removal is omitted before an aircraft's takeoff because it renders the flight control inoperative.

The prototype of the B-17's crash on October 30, 1935

The very first example built of the University of Evansville men's basketball team plane crash occurred due to failure to remove the gust locks.

For this reason, gust lock disengagement is a very important step on the takeoff checklist for those aircraft equipped with gust locks.


"Gust lock". The Illustrated Encyclopedia of Aviation and Space 6. Los Angeles: A.F.E. Press. 1971. p. 1043.  

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