What was found
WHILE ACCOMPLISHING NG-36EO-22817-1, FOUND BOTH 5TH STG BLEED AIR CHECK VALVES CORRODED OUT OF LIMITS. GROUNDED - YES. REMOVED AND REPLACED #1 AND #2 ENGINE 5TH STG BLEED AIR CHECK VALVES. REF B737-800 AMM 36-11-02.
- Difficulty date
- July 23, 2020
- Submitted
- July 27, 2020
- Operation
- Air carrier
- Aircraft
- N564AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35103
- Aircraft time
- 51,404 hours, 15,446 cycles
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Check Valve
- Part number
- 32022221
- Part serial
- 11795
- Condition
- Corroded
- Location
- Engine
- Part time
- 39,902 hours, 12,133 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.