What was found
AFTER NR 1 ENGINE SHUTDOWN, VALVE CLOSED BLUE LIGHT DID NOT INDICATE VALVE CLOSED. BLUE LIGHT REMAINS BRIGHT. ACFT GROUNDED. REMOVED AND REPLACED THE NR 1 ENGINE HMU IAW T/C N8473000 AND N 8473001. OPS AND LEAK CHECKED GOOD.
- Difficulty date
- May 9, 2018
- Submitted
- May 18, 2018
- Operation
- Air carrier
- Aircraft
- N459AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36352
- Aircraft time
- 16,782 hours, 5,559 cycles
- Engine
- Cfmint CFM567B27E
- System (JASC)
- 7320 · Fuel Controlling System
- Part
- Hmu
- Part number
- 442653
- Part serial
- BECW6767
- Condition
- Failed
- Location
- Nr 1 Engine
- Part time
- 33,325 hours, 10,404 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.