<< >> NASA ASRS Report 820718, January 2009

After installing a right main landing gear inner door on a B737; a mechanic describes the damage to the inner door and the fuselage body fairing during the extend cycle of the gear swing.

Attributes
ACN	820718
Time
Date	200901
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Flight Phase	Parked
Component
Aircraft Component	Main Gear Door
Person 1
Function	Technician
Events
Anomaly	Deviation - Procedural Maintenance

Narrative:

After installing right-hand main landing gear inner door; we jacked the aircraft to perform right-hand gear swing to check for fit and clearance. I was on the headset guiding the mechanic in the cockpit to slowly raise gear. When gear was fully retracted; I noticed the forward edge of the door was a very tight fit. At this time there was; in my opinion; not much we could do to alter the fit. So I decided to lower the gear to reevaluate the door. During extension of gear; the door edge caught the body fairing lip and caused the door adjustment rod to snap. This caused a puncture on the inner portion of the door and cracked the forward fairing slightly.

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Original NASA ASRS Text

Title: After installing a right main landing gear inner door on a B737; a mechanic describes the damage to the inner door and the fuselage body fairing during the extend cycle of the gear swing.

Narrative: After installing right-hand main landing gear inner door; we jacked the aircraft to perform right-hand gear swing to check for fit and clearance. I was on the headset guiding the mechanic in the cockpit to slowly raise gear. When gear was fully retracted; I noticed the forward edge of the door was a very tight fit. At this time there was; in my opinion; not much we could do to alter the fit. So I decided to lower the gear to reevaluate the door. During extension of gear; the door edge caught the body fairing lip and caused the door adjustment rod to snap. This caused a puncture on the inner portion of the door and cracked the forward fairing slightly.

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.