What was found
#1 ENG HIGH STAGE REGULATOR INOP. GROUNDED - YES. REPLACED #1 ENG HIGH STAGE REGULATOR , OPS LEAK CHECK OK. REF B737-900 AMM 36-11-07-400-801.
- Difficulty date
- January 3, 2023
- Submitted
- January 4, 2023
- Operation
- Air carrier
- Aircraft
- N453AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36354
- Aircraft time
- 33,832 hours, 10,653 cycles
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Regulator
- Part number
- 1074847
- Part serial
- 9295
- Condition
- Inoperative
- Location
- Nr 1 Engine
- Part time
- 53,187 hours, 17,117 cycles
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.