- Difficulty date
- July 25, 2015
- Submitted
- July 28, 2015
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35683
- Aircraft time
- 30,468 hours, 9,135 cycles
- Part
- Regulator
- Part number
- 1074847
- Part serial
- 3199
- Condition
- Failed
- Location
- Nr 1 Bleed
- Part time
- 56,454 hours, 29,082 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 PRESSURE SPLIT INFLIGHT, LT PRESSURE 22, RT PRESSURE 45 AT FL360. ACFT GROUNDED. ACCOMPLISHED TC NG-36WC-00001. ENGINE BLEED AIR HEALTH CHECK. NR 1 ENGINE HIGH-STAGE REGULATOR FAILED HEALTH CHECK. REPLACED IAW 36-11-07-000-801 & 36-11-07-400-801. OPS & LEAK CHECK GOOD. ENGINE BLEED AIR CROSSOVER OPS TEST ACCOMPLISHED REF AMM 36-11-00-710-801.