<< >> NASA ASRS Report 854311, September 2009

During a main landing gear (medium large transport) change on a B737-700; the reaction link and lower side brace (strut) was installed as an assembly from a contracted vendor repair facility with the lower side strut bolt head facing forward; instead of aft; resulting in damage to the aft shelf during medium large transport operational checks.

Attributes
ACN	854311
Time
Date	200909
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Night
Aircraft 1
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	Parked
Component
Aircraft Component	Gear Extend/Retract Mechanism
Person 1
Function	Technician
Qualification	Maintenance Airframe Maintenance Powerplant
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy Deviation - Procedural Maintenance

Narrative:

During main landing gear (medium large transport) change on a B737-700 aircraft; the reaction link and the lower side brace was installed as an assembly; built up from the vendor. The medium large transport was operationally checked several times with proper operation. It was found that the bolt in the lower side brace assembly was installed head forward; instead of head aft; causing damage to the aft shelf panel. During installation; the bolt was not removed.

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Original NASA ASRS Text

Title: During a Main Landing Gear (MLG) change on a B737-700; the Reaction link and Lower Side Brace (Strut) was installed as an assembly from a contracted Vendor Repair facility with the lower Side Strut bolt head facing forward; instead of aft; resulting in damage to the aft shelf during MLG operational checks.

Narrative: During Main Landing Gear (MLG) change on a B737-700 aircraft; the Reaction link and the Lower Side Brace was installed as an assembly; built up from the vendor. The MLG was operationally checked several times with proper operation. It was found that the bolt in the lower Side Brace assembly was installed head forward; instead of head aft; causing damage to the aft shelf panel. During installation; the bolt was not removed.

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.