- Difficulty date
- May 7, 2015
- Submitted
- May 11, 2015
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35107
- Aircraft time
- 27,384 hours, 8,454 cycles
- Part
- Valve
- Part number
- 32144464
- Part serial
- 4793
- Condition
- Failed
- Location
- Nr 1 Engine
- Part time
- 58,587 hours, 26,499 cycles
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DUCT SPLIT OBSERVED AT FL380 RT DUCT 40PSI LT DUCT 20PSI. ACFT GROUNDED. ACCOMPLISHED T/C: NG-36WC-00001, STEPS 1 THRU 5 ON ENG 1. REPLACED PRE-COOLER VALVE REF MM 36-12-02. REPLACED HIGH STAGE VALVE REF MM 36-11-06. COMPLIED W/ TC: NG-36WV-00001, STEP 6. OPS CHECK GOOD. NO FURTHER DEFECTS NOTED.