What was found
APU HAD DMM DATA DISCREPANCY. ACFT GROUNDED. REMOVED & REPLACED THE APU. OPS & LEAK CHECKED GOOD IAW AMM 49-11-00-400-803.
- Difficulty date
- March 28, 2018
- Submitted
- March 29, 2018
- Operation
- Air carrier
- Aircraft
- N493AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41727
- Aircraft time
- 7,576 hours, 2,578 cycles
- System (JASC)
- 4920 · APU Core Engine
- Part
- Apu
- Part number
- 38007021
- Part serial
- P11137
- Condition
- Malfunctioned
- Location
- Apu Bay
- Part time
- 1,868 hours, 3,702 cycles
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.