- Difficulty date
- July 29, 2020
- Submitted
- August 3, 2020
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 39043
- Aircraft time
- 44,670 hours, 13,260 cycles
- Engine
- Cfmint CFM567B27B3
- Part
- Bleed Valve
- Part number
- 32022221
- Part serial
- 4969
- Condition
- Failed
- Location
- Engine
- Part time
- 66,135 hours, 34,546 cycles
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#2 AND #1 ENGINE BLEED AIR 5TH STAGE CHECK VALVE FAILED CLEARANCE CHECK BETWEEN THE FLAPPER BUSHINGS. REF T/C NG-36EO-22817-1. GROUNDED - YES. REMOVED ENGINE BLEED AIR 5TH STAGE CHECK VALVE S/N 4969 FROM #1 ENGINE AND S/N 6630 FROM #2 ENGINE PER B737-800 AMM 36-11-02-000-801. REPLACED #1 AND #2 ENGINE BLEED AIR 5TH STAGE CHECK VALVES PER AMM 36-11-02-400-801. OPS CHECKED AND LEAK CHECKED GOOD.