What was found
WITH APU BLEED OFF AND ISOLATION VALVE CLOSED LT DUCT PRESS WAS STILL INDICATED. ACFT GROUNDED. REPLACED NR 1 ENG PRSOV AND BLEED AIR REGULATOR IAW AMM 36-11-03 AND 36-11-04. ACCOMPLISHED LEAK CKS FOUND OK.
- Difficulty date
- April 29, 2013
- Submitted
- May 1, 2013
- Operation
- Air carrier
- Aircraft
- N597AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35689
- Aircraft time
- 19,290 hours, 6,054 cycles
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Regulator
- Part number
- 1074926
- Part serial
- 6585
- Condition
- Failed
- Location
- Nr 1 Engine
- Part time
- 41,629 hours, 17,255 cycles
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.