What was found
DURING PREFLIGHT, THE NR 2 ENGINE VALVE CLOSED LIGHT ILLUMINATED BRIGHT BLUE. ACFT GROUNDED. REMOVED AND REPLACED THE NR 2 HMU, OPS AND LEAK CHECKED GOOD, ENGINE VALVE CLOSED LIGHT OPERATES NORMALLY.
- Difficulty date
- June 2, 2018
- Submitted
- June 4, 2018
- Operation
- Air carrier
- Aircraft
- N423AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 35206
- Aircraft time
- 20,359 hours, 6,739 cycles
- Engine
- Cfmint CFM567B27E
- System (JASC)
- 7320 · Fuel Controlling System
- Part
- Hmu
- Part number
- 442369
- Part serial
- BAMW5916
- Condition
- Stuck
- Location
- Nr 2 Engine
- Part time
- 23,040 hours, 9,884 cycles
- Stage of operation
- TX
- 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.