Service difficulty report · Overheat Loop · Boeing 747451
FAA SDR system
- Difficulty date
- July 12, 2012
- Submitted
- August 24, 2012
- Operation
- Air carrier
- Make and model
- Boeing 747451
- Aircraft serial
- 26473
- Aircraft time
- 74,177 hours, 8,758 cycles
- Engine
- Pwa PW4056
- Part
- Overheat Loop
- Part number
- 644501
- Part serial
- 12749
- Condition
- Failed
- Location
- Nr 3 Nacelle
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 3 ENGINE OVERHEAT LOOP 'A" FAULT. REPLACED FIRE OVERHEAT DETECTOR TS684 PER AMM.