What was found
CFM REPORTS #1 ENGINE (LEAP-1B28 / SN 603845) HAS ELEVATED NSV VIBRATION LEVELS. ENGINE REMOVAL IS REQUIRED. NO EXTENSION ALLOWED. GROUNDED - YES. ACCOMPLISHED #1 ENGINE CHANGE , REF. ASA T/C 71-ASA-01 & T/C 71-ASA-02.
- Difficulty date
- October 17, 2022
- Submitted
- October 17, 2022
- Operation
- Air carrier
- Aircraft
- N979AK
- Make and model
- Boeing 7379
- Aircraft serial
- 43393
- Aircraft time
- 811 hours, 275 cycles
- Engine
- Cfmint LEAP1B28
- Engine time
- 1,530 hours, 591 cycles
- System (JASC)
- 7230 · Turbine Engine Compressor Section
- Part
- Engine
- Part number
- LEAP1B28
- Part serial
- 603845
- Condition
- Vibration
- Location
- #1 Engine
- Part time
- 1,530 hours, 591 cycles
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.