B747-400
Maintenance Airframe; Maintenance Powerplant
Maintenance Technician 32
Confusion; Situational Awareness
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy
General Maintenance Action
Chart Or Publication; Human Factors; Aircraft; Manuals
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.
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.