Two line mechanics report about their involvement with an A300 aircraft #2 engine thrust reverser de...

Attributes
ACN	916996
Time
Date	201010
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Night
Aircraft 1
Make Model Name	A300
Operating Under FAR Part	Part 121
Flight Phase	Parked
Component
Aircraft Component	Fan Reverser
Person 1
Function	Technician
Qualification	Maintenance Airframe Maintenance Powerplant
Experience	Maintenance Technician 25
Person 2
Function	Technician
Qualification	Maintenance Powerplant Maintenance Airframe
Experience	Maintenance Technician 36
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural MEL Deviation - Procedural Published Material / Policy

Narrative:

I was working an A300 aircraft deferring the #2 engine thrust reversers per MEL chapter 78-30-01-a. I set up aircraft per MEL; pulling all C/bs (circuit breakers). During the performing of the maintenance; I missed the directional pilot valve and pressure switch due to getting supplies and other equipment to complete the job.I started on the left side of the engine and we removed air power lines and capped the line to the [reverser] drive unit. I stopped to get more tools and set up the equipment. I did not double check to make sure the job was completed. I feel that we should have done a review of the work after we completed the job. All work will be completed and checked per maintenance manual before closing out the job.

Original NASA ASRS Text

Title: Two Line Mechanics report about their involvement with an A300 aircraft #2 engine thrust reverser de-activation procedure. A subsequent air turnback was performed by Flight crew due to a reverser unsafe condition.

Narrative: I was working an A300 aircraft deferring the #2 engine Thrust Reversers per MEL Chapter 78-30-01-A. I set up aircraft per MEL; pulling all C/Bs (Circuit Breakers). During the performing of the maintenance; I missed the Directional Pilot Valve and Pressure switch due to getting supplies and other equipment to complete the job.I started on the left side of the engine and we removed air power lines and capped the line to the [Reverser] Drive Unit. I stopped to get more tools and set up the equipment. I did not double check to make sure the job was completed. I feel that we should have done a review of the work after we completed the job. All work will be completed and checked per Maintenance Manual before closing out the job.

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.

Two line mechanics report about their involvement with an A300 aircraft #2 engine thrust reverser de-activation procedure. A subsequent air turnback was performed by flight crew due to a reverser unsafe condition.