What was found
APU FAILS TO START, BITE CHECK SHOWS MAINT MESSAGE 49-41245 SCU. GROUNDED - YES. REMOVED AND REPLACED APU STARTER GENERATOR IN REF TO B737-800 AMM 49-41-21.
- Difficulty date
- March 31, 2023
- Submitted
- April 4, 2023
- Operation
- Air carrier
- Aircraft
- N514AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35193
- Aircraft time
- 51,977 hours, 15,310 cycles
- System (JASC)
- 4900 · Airborne Auxiliary Power Unit (APU) System
- Part
- Generator
- Part number
- 28B5459STYLEA
- Part serial
- 71A0856
- Condition
- Low
- Location
- Apu
- Part time
- 10,426 hours, 17,876 cycles
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.