- Difficulty date
- September 8, 2021
- Submitted
- September 9, 2021
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35180
- Aircraft time
- 53,916 hours, 15,948 cycles
- Part
- Transmitter
- Part number
- H504B
- Condition
- Faulted
- Location
- Lt Wing Spoiler
- Stage of operation
- IN
- How discovered
- 9
- 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
DFCS BITE LIBRARY TEST 60.31 FAULT. AILERON SPOIL-4 SIG FAIL FCC B. FAULT MESSAGE 22-11158. SUSPECTED LRU SPOIL-4 POS SENSOR-2. GROUNDED - YES. REPLACED #4 SPOILER POSITION SENSOR REF B737-800 AMM 22-11-27-400-801. OPS NORMAL. BITE LIBRARY 60.31 ALL TESTS PASS CHANNEL A & B.