# SDR ASAA0955007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 30, 2009
- Submitted: April 6, 2009
- Operation: Air carrier
- Aircraft: [N517AS](https://openairdocs.org/aircraft/N517AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35197
- Aircraft time: 804 hours, 237 cycles
- Engine: Cfmint CFM567B273
- Engine time: 804 hours, 237 cycles
- System (JASC): [7230 · Turbine Engine Compressor Section](https://openairdocs.org/jasc/7230)
- Part: Shim
- Part number: 3402523070
- Condition: Worn
- Location: Nr 1 Engine
- Stage of operation: IN
- How discovered: O
- Nature of condition: E
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA0955007

## Discrepancy

NR 1 ENGINE TREND DATA SHOWS A SUDDEN INCREASE IN LOW PRESSURE ROTOR VIBRATION LEVELS.  DATA SCATTER INDICATES HARDWARE INSPECTION AND FAN LUBE REQUIRED.  ACCOMPLISHED FAN BLADE LUBE PER T/C 78472002.  FOUND FAN BLADE SHIM COATING WORN.  REPLACED 24 EA FAN BLADE SHIMS P/N 340 252 307 0 PER T/C 78472002.

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