- Difficulty date
- May 12, 2022
- Submitted
- May 13, 2022
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35199
- Aircraft time
- 42,294 hours, 12,243 cycles
- Part
- Regulator
- Part number
- 1074847
- Part serial
- 5420
- Condition
- Failed
- Location
- #1 Engine
- Part time
- 62,751 hours, 30,388 cycles
- Stage of operation
- IN
- 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.
What was found
REF ASA TASKCARD NG-36C-00001. #1 ENG HIGH STAGE VALVE FAILED REVERSE FLOW DIAGRAGHING SHEET. GROUNDED - YES. REMOVED #1 ENG HIGH STAGE REGULATOR REF B737-800 AMM 36-11-07. INSTALLED #1 ENG HIGH STAGE REG REF AMM 36-11-07. LK AND OPS CHECK GOOD.