Narrative:

I was tasked with replacing the inboard (I/B) thrust reverser blow-out door. The parts were requisitioned by my supervisor in august 2012. I got the parts one day later at approximately xa:30pm. I had references on the requisition form that I could not find for the ipc; so I tried to find them myself. What I came up with was different than the parts that were being comatted [shipping company material] from our ZZZ gateway to [our local] ZZZ1 gateway; so I tried to check the part number (P/north) in our inventory portal and that showed alternate part numbers that had the same base numbers. When I asked about this; I was told that those numbers are not always right. When I had part in hand and compared it to the damaged part it was identical. The part was undrilled for the mounting hinge installation; so I drilled it and installed it with the hi-loks and torqued the collars. I used the structural repair manual (srm) reference for installing hi-loks which secured the hinge to the frame of the thrust reverser (T/right). The maintenance manual (M/M) for removal and replacement; M/M 78-31-19 never mentions anything about drilling up the new part; only remove the collars[nuts] on the hi-loks; remove the door; install the door over the hi-loks and install the collars [nuts] back and close the door. I made the mistake of not putting the installed P/north or serial number (south/north) on the logsheet because I didn't have a removed P/north or south/north; there wasn't one on the removed part. Company inventory parts system caught the mistake.

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Original NASA ASRS Text

Title: A Line Mechanic was informed he did not include a Part Number (P/N) or Serial Number (S/N) on a Logsheet after replacing an inboard Thrust Reverser Blow-out door on a B747-400 aircraft.

Narrative: I was tasked with replacing the Inboard (I/B) Thrust Reverser Blow-out door. The parts were requisitioned by my Supervisor in August 2012. I got the parts one day later at approximately XA:30pm. I had references on the requisition form that I could not find for the IPC; so I tried to find them myself. What I came up with was different than the parts that were being comatted [shipping company material] from our ZZZ gateway to [our local] ZZZ1 gateway; so I tried to check the Part Number (P/N) in our inventory portal and that showed alternate part numbers that had the same base numbers. When I asked about this; I was told that those numbers are not always right. When I had part in hand and compared it to the damaged part it was identical. The part was undrilled for the mounting hinge installation; so I drilled it and installed it with the Hi-Loks and torqued the collars. I used the Structural Repair Manual (SRM) reference for installing Hi-Loks which secured the hinge to the frame of the Thrust Reverser (T/R). The Maintenance Manual (M/M) for removal and replacement; M/M 78-31-19 never mentions anything about drilling up the new part; only remove the collars[nuts] on the Hi-Loks; remove the door; install the door over the Hi-Loks and install the collars [nuts] back and close the door. I made the mistake of not putting the installed P/N or Serial Number (S/N) on the Logsheet because I didn't have a removed P/N or S/N; there wasn't one on the removed part. Company inventory parts system caught the mistake.

Data retrieved from NASA's ASRS site as of July 2013 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.