|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1801-2400|
|Make Model Name||No Aircraft|
|Aircraft Component||AC Generator/Alternator|
|Anomaly||Deviation - Procedural FAR|
Deviation - Procedural Maintenance
Deviation - Procedural Published Material / Policy
Job instruction card (jic) XXXX; step 2; calls out to install o-ring [seal] on integrated drive generator (idg) shaft; reference company illustrated parts catalog (ipc) parts breakdown illustration 71-00-01. The part number (P/north) according to above ipc reference is an AS3209-138 [O-ring seal]. As per engineering order XXX dated 2004; this o-ring AS3209 can no longer be used on pratt-whitney pw-4000 engines and have to be replaced with part number MS83485-1-138.
Original NASA ASRS Text
Title: A Pratt-Whitney PW-4000 Mechanic calls attention to their Illustrated Parts Catalog (IPC) parts breakdown referencing the use of AS type O-ring seals on the Integrated Drive Generator drive shafts. The AS type O-ring seals had been discontinued due to deterioration of the seals from the same type of engine oil still in use.
Narrative: Job Instruction Card (JIC) XXXX; step 2; calls out to install O-ring [seal] on Integrated Drive Generator (IDG) shaft; reference company Illustrated Parts Catalog (IPC) parts breakdown illustration 71-00-01. The Part Number (P/N) according to above IPC reference is an AS3209-138 [O-ring seal]. As per Engineering Order XXX dated 2004; this O-ring AS3209 can no longer be used on Pratt-Whitney PW-4000 engines and have to be replaced with Part Number MS83485-1-138.
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.