# SDR ASAA2023040742779

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2023
- Submitted: April 10, 2023
- Operation: Air carrier
- Aircraft: [N559AS](https://openairdocs.org/aircraft/N559AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35178
- Aircraft time: 57,521 hours, 16,989 cycles
- Engine: Cfmint CFM567B20
- System (JASC): [7220 · Turbine Engine Air Inlet Section](https://openairdocs.org/jasc/7220)
- Part: Blade
- Part number: 3400010380
- Condition: Faulty
- Location: #2 Engine
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023040742779

## Discrepancy

DUE TO ONGOING VIBRATION ISSUES ON #2 ENGINE. REQUEST FAN SET REPLACEMENT. TASK CARD 78472010 FAN BLADE ULTRA INSP REQUIRED. GROUNDED - YES. REMOVED AND REPLACED FAN SET PER B737-800 AMM 72-21-02. ACCOMPLISHED VIBRATION SURVEY AND FAN TRIM BALANCE PROCEDURE. VIBRATION SURVEY GOOD. NO OTHER DEFECTS NOTED. REF TC 78472010, TSR714105, TSR714134, TSR714149.

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