|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1801-2400|
|Make Model Name||DC-9 50|
|Operating Under FAR Part||Part 121|
|Aircraft Component||Nose Gear|
|Experience||Maintenance Technician 24|
|Anomaly||Aircraft Equipment Problem Critical|
Deviation - Procedural Published Material / Policy
Dc-9 aircraft logbook write-up: nose strut bottoms-out going over bumps. Weather [was] cold; low 40's; printed up aircraft maintenance manual (amm) dc-9A -32-21-02 alternate method [of nose gear servicing]. I failed to replace schrader valve o-ring after servicing nose strut; leaked check with 'snoop'. Found ok and serviced [strut] to 1-inch above required [extension].plane departed 45-minutes late. Because of air carrier merger; there is a difference with amm procedures calling for the change of o-ring and deferring x-dimension check for 15 cycles. Aircraft made seven cycles before having nose gear not retract at ZZZ.
Original NASA ASRS Text
Title: A Line Mechanic reports a DC-9-50 aircraft nose landing gear would not retract after takeoff; requiring an air turnback. Mechanic had previously serviced the same nose gear due for a 'nose strut bottoms-out when going over bumps' logbook write-up.
Narrative: DC-9 aircraft logbook write-up: Nose strut bottoms-out going over bumps. Weather [was] cold; low 40's; printed up Aircraft Maintenance Manual (AMM) DC-9A -32-21-02 alternate method [of nose gear servicing]. I failed to replace Schrader valve O-ring after servicing nose strut; leaked check with 'SNOOP'. Found OK and serviced [strut] to 1-inch above required [extension].Plane departed 45-minutes late. Because of Air Carrier merger; there is a difference with AMM procedures calling for the change of O-ring and deferring X-Dimension Check for 15 cycles. Aircraft made seven cycles before having nose gear not retract at ZZZ.
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.