- Difficulty date
- April 19, 2023
- Submitted
- April 21, 2023
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 40715
- Aircraft time
- 29,055 hours, 9,119 cycles
- Part
- Unknown
- Part number
- UNKNOWN
- Condition
- Unknown
- Location
- Unknown
- Stage of operation
- NR
- 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.
What was found
FMC STUCK IN BITE MODE. GROUNDED - YES. VERIFIED FAULT FMC CDU STUCK IN APU BITE. CYCLED C/B P6-4 F12. FMC CDU WENT TO NML. ACCOMP. APU FMC BITE NO APU FAULTS & FMC NML OPS. ACCOMP. APU STARTING & OPERATION TEST, TEST PASS REF. B737-900 AMM 49-61-00-700-801, & AMM 49-11-00-860-801.