What was found
APU BLEED PRESSURE DROPPED FOLLOWED BY PACK SURGE ON GROUND AFTER ENGINES SHUTDOWN. PERFORMED PNEUMATIC LEAK TEST ON APU SENSOR LINES FOUND SURGE VALVE LOOSE. RE-TIGHTENED IAW MM 49-53-02.
- Difficulty date
- June 27, 2016
- Submitted
- July 1, 2016
- Operation
- Air carrier
- Aircraft
- N648GT
- Make and model
- Boeing 76733AER
- Aircraft serial
- 27310
- Aircraft time
- 89,704 hours, 17,403 cycles
- System (JASC)
- 4950 · APU Bleed Air System
- Part
- Valve
- Condition
- Loose
- Location
- Apu
- Stage of operation
- TX
- How discovered
- C
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.