What was found
DESCENDING THROUGH FL180, NR 3 ENGINE FIRE LOOP B STATUS MESSAGE. GROUND TEST PASSED. REPLACED THE NR 3 ENGINE LOWER LOOP ASSY IAW AMM 26-11-02-4, OPS TESTED GOOD. NO STATUS MESSAGE IAW AMM 26-11-00-715-001.
- Difficulty date
- April 17, 2018
- Submitted
- April 25, 2018
- Operation
- Air carrier
- Aircraft
- N575UP
- Make and model
- Boeing 747400
- Aircraft serial
- 35664
- Aircraft time
- 38,063 hours, 5,680 cycles
- System (JASC)
- 2612 · Fire Detection
- Part
- Fire Loop
- Condition
- Malfunctioned
- Location
- Nr 3 Engine
- 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.