What was found
NR 2 "EEC GRD TEST ENG" CIRCUIT BREAKER ON PANEL P414, GRID D22 POPS WHEN NR 2 EEC TEST SWITCH IS SELECTED TO TEST ON THE COCKPIT OVERHEAD PANEL. ENGINE REPLACED. FOUND W1 & W2 HARNESS SHORTED AND CAUSING CIRCUIT BREAKERS TO POP.
- Difficulty date
- January 23, 2008
- Submitted
- February 14, 2008
- Operation
- Air carrier
- Aircraft
- N177UA
- Make and model
- Boeing 747422
- Aircraft serial
- 24384
- Aircraft time
- 73,593 hours, 9,165 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 7397 · Engine Fuel System Wiring
- Part
- Wire Harness
- Condition
- Shorted
- Location
- Nr 2 Eec
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.