What was found
DURING HPSOV LOCKOUT PROCEDURE (ENGINE NO 1 COMPRESSOR WASH) LOCKBOLT HELICOIL BACKED OUT. GROUNDED - YES. REPLACED NO 1 ENGINE HPSOV REF B737-9 AMM 36-11-07. LEAK TEST GOOD. LRU REPLACEMENT TESTS GOOD.
- Difficulty date
- September 2, 2021
- Submitted
- September 4, 2021
- Operation
- Air carrier
- Aircraft
- N919AK
- Make and model
- Boeing 7379
- Aircraft serial
- 44087
- Aircraft time
- 1,004 hours, 451 cycles
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Shutoff Valve
- Part number
- 632920682
- Part serial
- 802
- Condition
- Inoperative
- Location
- #1 Engine
- Part time
- 993 hours, 449 cycles
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.