What was found
NR 1 ENGINE TAI LIGHT CYCLES AMBER OFF, THEN GREEN. OVERHEAD SWITCH LIGHT SHOWS NORMAL OPERATION. GROUNDED - YES. REMOVED AND REPLACED NR 1 ENG TAI VALVE WITH NEW, OPS CHECK GOOD PER AMM 30-21-11. THIS CLEARS MEL 30-4C.
- Difficulty date
- March 13, 2019
- Submitted
- March 20, 2019
- Operation
- Air carrier
- Aircraft
- N468AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41735
- Aircraft time
- 18,721 hours, 6,176 cycles
- System (JASC)
- 3020 · Air Intake Anti/De-Ice System
- Part
- Anti-Ice Valve
- Part number
- 32156185
- Part serial
- 11182
- Condition
- Failed
- Location
- Nr 1 Engine
- Part time
- 18,801 hours, 6,201 cycles
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.