AAIB investigation to Rockwell Commander 114, G-TWIZ

Main landing gear collapse due to upper side-brace failure, Lydd Airport, Kent, 1 August 2017.

From:
Air Accidents Investigation Branch
Published
12 April 2018
Category:
General aviation - fixed wing
Report type:
Bulletin - Field investigation
Date of occurrence:
1 August 2017
Aircraft type:
Rockwell Commander 114 Comander
Location:
Lydd Airport, Kent
Registration:
G-TWIZ

Summary:

The aircraft鈥檚 left main landing gear (MLG) leg collapsed while landing at Lydd, following the fracture of the left MLG upper side-brace during retraction of the landing gear after takeoff. The upper side-brace had fractured under the application of landing gear retraction loads, due to the presence of a fatigue crack originating at a 鈥榗old shut鈥� casting defect. In response to this investigation the Type Certificate holder issued Service Bulletins applicable to the Rockwell Commander 112 and 114 aircraft models requiring inspection of the upper side-brace for cracking.

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Published 12 April 2018
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