What was found
APU COMPRESSOR STALLS OR SURGES ABOUT EVERY 5 MINUTES WITH LT PACK RUNNING. GROUNDED - YES. REPLACED APU PER ASA T/C 78349010.
- Difficulty date
- November 11, 2018
- Submitted
- November 15, 2018
- Operation
- Air carrier
- Aircraft
- N419AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41734
- Aircraft time
- 22,409 hours, 7,363 cycles
- System (JASC)
- 4920 · APU Core Engine
- Part
- Compressor
- Condition
- Stalled
- Location
- Apu
- Component
- Apu
- Component part number
- 38007021
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.