What was found
#1 ENGINE TREND DATA SHOWS A RAPID RISE IN LOW PRESSURE ROTOR VIBRATION LEVELS AFTER ENGINE INSTALLATION. GROUNDED - YES. REMOVED #1 ENGINE ESN 874470. REF ASA SHOP W/O 1944222.
- Difficulty date
- February 27, 2023
- Submitted
- February 27, 2023
- Operation
- Air carrier
- Aircraft
- N409AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41733
- Aircraft time
- 36,251 hours, 11,566 cycles
- Engine time
- 54,174 hours, 24,444 cycles
- System (JASC)
- 7230 · Turbine Engine Compressor Section
- Part
- Engine
- Part number
- CFM567B27
- Part serial
- 874470
- Condition
- Vibration
- Location
- Left Wing
- Part time
- 54,174 hours, 24,444 cycles
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.