- Difficulty date
- August 14, 2019
- Submitted
- August 16, 2019
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35183
- Aircraft time
- 47,907 hours, 14,440 cycles
- Part
- Computer
- Part number
- 8221604101
- Part serial
- 8BDX
- Condition
- Failed
- Location
- Flt Control
- Part time
- 47,634 hours, 14,351 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.
What was found
COPILOT'S FLIGHT DIRECTOR FLAG ON. GROUNDED - YES. AMM 22-11-33/401. ACCOMPLISHED ALT DEACTIVATION REF CH5 TABLE 3 ITEM 1. REMOVED AND REPLACED FCC-B. REVERSED ALT DEACTIVATIONS. OPS TEST NORMAL. REF HGS-4000 SMM 34-36-00. ACCOMPLISHED HGS OPS TEST. ALL LLM REQUIRED TESTS PASSED.