What was found
NR 1 COWL ANTI-ICE ILLUMINATES ON ENGINE RUN UP AT APPROXIMATELY 80% N1. GROUNDED - YES. REMOVED AND REPLACED NR 1 ENGINE TAI VALVE PER AMM 30-21-11. GROUND VERIFICATION ACCOMPLISHED PER AMM 30-21-11/400.
- Difficulty date
- November 23, 2018
- Submitted
- November 27, 2018
- Operation
- Air carrier
- Aircraft
- N440AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41705
- Aircraft time
- 20,429 hours, 6,753 cycles
- System (JASC)
- 3020 · Air Intake Anti/De-Ice System
- Part
- Anti-Ice Valve
- Part number
- 32156185
- Part serial
- 9809
- Condition
- Intermittent
- Location
- Nr 1 Engine
- Part time
- 16,653 hours, 5,500 cycles
- Stage of operation
- TX
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- D
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.