What was found
NR 4 ENGINE FAILED BOROSCOPE. ENGINE REMOVED AND REPLACED.
- Difficulty date
- October 3, 2012
- Submitted
- November 15, 2012
- Operation
- Air carrier
- Aircraft
- N128UA
- Make and model
- Boeing 747422
- Aircraft serial
- 30023
- Aircraft time
- 50,394 hours, 5,914 cycles
- Engine
- Pwa PW4056
- Engine time
- 44,491 hours, 7,185 cycles
- System (JASC)
- 7200 · Engine (Turbine/Turboprop)
- Part
- Engine
- Part number
- PW564R
- Part serial
- 727869
- Condition
- Damaged
- Location
- Nr 4
- Part time
- 44,491 hours, 7,185 cycles
- Stage of operation
- IN
- How discovered
- B
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.