What was found
APU HAD FLUCTUATING BLEED AIR PRESSURE DROPPED TO 0 TWICE STABILIZED AFTER 3 MINUTES. GROUNDED - YES. APU DUCT PRESSURE WITHIN LIMITS AND STABLE REF B737-9 AMM 36-00-00. OK FOR SERVICE.
- Difficulty date
- September 24, 2023
- Submitted
- September 25, 2023
- Operation
- Air carrier
- Aircraft
- N931AK
- Make and model
- Boeing 7379
- Aircraft serial
- 43353
- Aircraft time
- 6,558 hours, 1,902 cycles
- System (JASC)
- 4950 · APU Bleed Air System
- Part
- Unknown
- Part number
- UNKNOWN
- Condition
- Unknown
- Location
- Unknown
- Stage of operation
- NR
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.