What was found
ENG 3 OSCILLATING AT FL390 EVERY 2 SECONDS. EPR FROM 1.27 TO 1.35NI FROM 89 TO 90. REPLACED FMU PER MM.
- Difficulty date
- February 29, 2012
- Submitted
- March 29, 2012
- Operation
- Air carrier
- Aircraft
- N104UA
- Make and model
- Boeing 747422
- Aircraft serial
- 26902
- Aircraft time
- 58,336 hours, 6,827 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 7321 · Fuel Control/Turbine Engines
- Part
- Fmu
- Part number
- 8010003
- Part serial
- 83
- Condition
- Defective
- Location
- Nr 3 Engine
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.