What was found
APU PNEUMATICS LOW READS APPROX 19 PSI ALONG WITH FLUCTUATING PRESSURE. REPLACED FLOW SENSING MODULE. REPLACED APU SURGE CONTROL VALVE. TESTED APU. OPS CHECKS NORMALLY.
- Difficulty date
- March 12, 2010
- Submitted
- March 19, 2010
- Operation
- Air carrier
- Aircraft
- N647UA
- Make and model
- Boeing 767322
- Aircraft serial
- 25284
- Aircraft time
- 77,367 hours, 12,582 cycles
- Engine
- Pwa PW4060
- System (JASC)
- 4950 · APU Bleed Air System
- Part
- Module
- Part number
- 36181531
- Part serial
- 10
- Condition
- Failed
- Location
- Apu
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.