What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: NUMBER 1 ENGINE HYDRAULIC PUMP FAILED, SHUTDOWN NUMBER 1 ENGINE. AIRCRAFT AIR INTERRUPTED BACK TO AND LANDED SAFELY AT ORD. **SUPPLEMENTAL REPORT WILL BE SUBMITTED**(OPEN).
- Difficulty date
- May 12, 2025
- Submitted
- May 13, 2025
- Operation
- Air carrier
- Aircraft
- N975AN
- Make and model
- Boeing 737823
- Aircraft serial
- 29549
- Aircraft time
- 66,775 hours, 28,286 cycles
- Engine
- Cfmint CFM567B242
- Engine time
- 71,005 hours
- System (JASC)
- 2913 · Hydraulic Pump (Electric/Engine), Main
- Part
- Pump
- Condition
- Failed
- Location
- Hyd System
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- K, J
- Precautionary procedure
- E, A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.