What was found
#2 ENGINE TREND DATA STILL SHOWS A RISE IN LOW PRESSURE ROTOR VIBRATION LEVELS WITH FAN SCATTER. (#PRI2/ETOPS)CNR 20230817065. TASK CARD 78472010. GROUNDED - YES. C/W TSR VIBES WITHIN LIMITS REPLACED 5 PLATFORMS.
- Difficulty date
- August 18, 2023
- Submitted
- August 29, 2023
- Operation
- Air carrier
- Aircraft
- N492AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 44110
- Aircraft time
- 28,421 hours, 8,914 cycles
- System (JASC)
- 7220 · Turbine Engine Air Inlet Section
- Part
- Blade
- Part number
- 3400018160
- Condition
- Degraded
- Location
- #2 Engine
- 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.