What was found
NR 4 ENG AFTER UPPER ENG MOUNT UPPER SURFACE WAS FOUND RUSTED HEAVILY. NR 4 ENGINE AFTER ENGINE MOUNT WAS REPLACED AS PER AMM 71-21-03 REV 86.
- Difficulty date
- December 7, 2011
- Submitted
- December 20, 2011
- Operation
- Air carrier
- Aircraft
- N758SA
- Make and model
- Boeing 747281F
- Aircraft serial
- 23138
- Aircraft time
- 104,725 hours, 19,263 cycles
- System (JASC)
- 7120 · Engine Mount Section
- Part
- Mount
- Condition
- Corroded
- Location
- Nr 4 Engine
- 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.