What was found
APU FIRE WARNING TEST HAS NO SPEAKER AURAL WARNING FOR T/S, WITH DOM'S APPROVAL IAW ETOPS MX MANUAL 5.1.5., SWAPPED M616 AND M621 POWER SUPPLY UNITS FOR TROUBLESHOOTING. NO HELP. RETURNED TO ORIGINAL POSITIONS. NG.)
- Difficulty date
- December 7, 2011
- Submitted
- December 7, 2011
- Operation
- Air carrier
- Aircraft
- N641GT
- Make and model
- Boeing 76738E
- Aircraft serial
- 25132
- Aircraft time
- 67,372 hours, 20,574 cycles
- System (JASC)
- 2612 · Fire Detection
- Part
- Warning System
- Condition
- Malfunctioned
- Location
- Apu Fire
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- P, L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.