What was found
BLEED AIR VALVES LEFT CIRCUIT BREAKER POPPED DURING CRUISE FLIGHT. GROUNDED - YES. REMOVED AND REPLACED #1 ENG BLEED AIR REGULATOR REF B737-900 AMM TASKS 36-11-03-000/400-801. OPS CHECK GOOD. LEAK CHECK GOOD.
- Difficulty date
- February 5, 2020
- Submitted
- February 11, 2020
- Operation
- Air carrier
- Aircraft
- N409AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41733
- Aircraft time
- 28,013 hours, 9,072 cycles
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Circuit Breaker
- Condition
- Tripped
- Location
- Bleed Air
- Part time
- 33 hours, 12 cycles
- Stage of operation
- CR
- 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.