What was found
NR 4 ENGINE IDG HAS BAD SEAL TO GEARBOX.
- Difficulty date
- August 15, 2013
- Submitted
- August 19, 2013
- Operation
- Air carrier
- Aircraft
- N171UA
- Make and model
- Boeing 747422
- Aircraft serial
- 24322
- Aircraft time
- 90,889 hours, 10,692 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 7200 · Engine (Turbine/Turboprop)
- Part
- Seal
- Condition
- Failed
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.