<< >> NASA ASRS Report 916947, October 2010

A PA-28 with a student and flight instructor aboard collapsed the left main gear on landing due to the failed installation of the fasteners securing the oleo in the strut housing.

Attributes
ACN	916947
Time
Date	201010
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	PA-28 Cherokee/Archer/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	Landing
Flight Plan	None
Component
Aircraft Component	Main Gear
Person 1
Function	Instructor Pilot Not Flying
Qualification	Flight Crew Commercial Flight Crew Flight Instructor Flight Crew Multiengine Flight Crew Instrument
Experience	Flight Crew Last 90 Days 50 Flight Crew Total 580 Flight Crew Type 200
Events
Anomaly	Aircraft Equipment Problem Critical Ground Event / Encounter Ground Strike - Aircraft

Narrative:

While instructing a student practicing short field landings; the left main landing gear strut assembly failed and resulted in the plane coming to a skidding halt on the runway. A cotter-pin was cited for failing in the left main scissor joint allowing the nut to twist loose. The oleo strut then came out of its usual position allowing the left strut housing to contact runway pavement. Due to the appropriate speed on touchdown; directional control was maintained.

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Original NASA ASRS Text

Title: A PA-28 with a student and flight instructor aboard collapsed the left main gear on landing due to the failed installation of the fasteners securing the oleo in the strut housing.

Narrative: While instructing a student practicing short field landings; the left main landing gear strut assembly failed and resulted in the plane coming to a skidding halt on the runway. A cotter-pin was cited for failing in the left main scissor joint allowing the nut to twist loose. The oleo strut then came out of its usual position allowing the left strut housing to contact runway pavement. Due to the appropriate speed on touchdown; directional control was maintained.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.