Narrative:

Aircraft came in with a PIREP of a leak in the left aircraft bay. Troubleshooting revealed a faulty bypass handle on the thrust reverser control module. Module was removed and replaced. All operations checks and leak checks were performed. No faults noted. We were concerned about the installation of the restrictor check valve. This I believe contributed to the failure of the hydraulic lines not being torqued. Supplemental information from acn 683648: was made aware that neither my co-worker nor I had checked out a torque wrench (per FAA inspector). I assumed my co-worker had torqued the lines. I cleaned the air conditioning bay of hydraulic residue; as well as signed off the log page.

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Original NASA ASRS Text

Title: A B737-500 HAD THE L THRUST REVERSER MODULE REPLACED FOR LEAKING. FAA SAFETY INSPECTOR NOTED TECHNICIANS DID NOT CHK MODULE FITTING TORQUE.

Narrative: ACFT CAME IN WITH A PIREP OF A LEAK IN THE L ACFT BAY. TROUBLESHOOTING REVEALED A FAULTY BYPASS HANDLE ON THE THRUST REVERSER CTL MODULE. MODULE WAS REMOVED AND REPLACED. ALL OPS CHKS AND LEAK CHKS WERE PERFORMED. NO FAULTS NOTED. WE WERE CONCERNED ABOUT THE INSTALLATION OF THE RESTRICTOR CHK VALVE. THIS I BELIEVE CONTRIBUTED TO THE FAILURE OF THE HYD LINES NOT BEING TORQUED. SUPPLEMENTAL INFO FROM ACN 683648: WAS MADE AWARE THAT NEITHER MY CO-WORKER NOR I HAD CHKED OUT A TORQUE WRENCH (PER FAA INSPECTOR). I ASSUMED MY CO-WORKER HAD TORQUED THE LINES. I CLEANED THE AIR CONDITIONING BAY OF HYD RESIDUE; AS WELL AS SIGNED OFF THE LOG PAGE.

Data retrieved from NASA's ASRS site as of January 2009 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.