- Difficulty date
- July 24, 2020
- Submitted
- July 27, 2020
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35107
- Aircraft time
- 46,094 hours, 13,868 cycles
- Part
- Check Valve
- Part number
- 32022221
- Part serial
- 4964
- Condition
- Failed
- Location
- Nr 1 Engine
- Part time
- 1,720 hours, 504 cycles
- Stage of operation
- IN
- How discovered
- V
- 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
ENGINE #1 TC NG-36EO-22817-1 5TH STAGE BLEED AIR CHECK VALVE INSPECTION - FAILED INSPECTION REQUIRES VALVE REPLACEMENT. GROUNDED - YES. INSTALLED BLEED AIR CHECK VALVE FOR #1 ENG IAW B737-800 AMM 36-11-02-400-801. LEAK CHECKED GOOD REF AMM 36-11-02-400-801 STEP 3.H.