A line mechanic reports a dc-9-50 aircraft nose landing gear would not retract after takeoff; requir...

Attributes
ACN	928579
Time
Date	201011
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Night
Aircraft 1
Make Model Name	DC-9 50
Operating Under FAR Part	Part 121
Flight Phase	Parked
Component
Aircraft Component	Nose Gear
Person 1
Function	Technician
Qualification	Maintenance Airframe Maintenance Avionics Maintenance Powerplant
Experience	Maintenance Technician 24
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy

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.

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.

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.