What was found
APU BLEED AIR LOW PRESSURE IN ALL MODES (DUCT PRESSURE) ON GROUND. PRESSURE LOW WITH APU AS THE AIR SOURCE. TIGHTEN BOLTS ON FLOW SENSING MODULE IAW AMM 49-53-05, DUCT PRESSURE. OPS CK NORMAL, REF FIM 49-11, TREE 980, BLK 51.
- Difficulty date
- October 21, 2013
- Submitted
- October 22, 2013
- Operation
- Air carrier
- Aircraft
- N640GT
- Make and model
- Boeing 7673S1
- Aircraft serial
- 25221
- Aircraft time
- 73,019 hours, 15,367 cycles
- System (JASC)
- 4950 · APU Bleed Air System
- Part
- Module
- Condition
- Loose
- Location
- Bleed Air
- Stage of operation
- TX
- 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.