What was found
#1 ENGINE N1 VIBE STARTED AT 1.8 AT LEVEL OFF AND SLOWLY CREEP UP TO 2.3 MAX OBSERVED IN FLIGHT WAS 2.5. DEFERRED LEFT ENGINE VIBRATION INDICATING SYSTEM PER MEL 77-31-01 CAT C.
- Difficulty date
- May 9, 2025
- Submitted
- May 14, 2025
- Operation
- Air carrier
- Aircraft
- N565NC
- Make and model
- Boeing 7673BG
- Aircraft serial
- 30565
- Aircraft time
- 80,608 hours, 18,700 cycles
- Engine
- Pwa PW4060
- Engine time
- 5,475 hours, 1,571 cycles
- System (JASC)
- 7200 · Engine (Turbine/Turboprop)
- Part
- Engine
- Condition
- Vibration
- Location
- Nr 1
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- E
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.