What was found
DIVERSION DUE TO THE LEFT ENGINE SURGING IN CRUISE WITH NO ASSOCIATED CAS MESSAGE. AIRCRAFT LANDED WITHOUT INCIDENT AT PHNL. REPLACED THE SUSPECTED FAULTY HYDROMECHANICAL UNIT IAW CH350 AMM 73-20-01. OPERATIONAL AND LEAK CHECKS GOOD.
- Difficulty date
- September 21, 2026
- Submitted
- October 5, 2026
- Operation
- Air carrier
- Aircraft
- N507FX
- Make and model
- Bombdr BD1001A10
- Aircraft serial
- 20947
- Aircraft time
- 4,459 hours, 2,558 cycles
- Engine
- Hnywl AS90721A
- System (JASC)
- 7320 · Fuel Controlling System
- Part
- Hmu
- Part number
- 442661
- Part serial
- FHC3444
- Condition
- Unserviceable
- Location
- Lt Engine
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- P
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.