# SDR ASAA2012082792767

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 1, 2012
- Submitted: August 27, 2012
- Operation: Air carrier
- Aircraft: [N583AS](https://openairdocs.org/aircraft/N583AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35681
- Aircraft time: 19,339 hours, 5,838 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7220 · Turbine Engine Air Inlet Section](https://openairdocs.org/jasc/7220)
- Part: Seal
- Condition: Torn
- Location: Engine Fan
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2012082792767

## Discrepancy

DIAGNOSTICS REPORTS, NR 2 ENGINE TREND DATA SHOWS A SUDDEN INCREASE IN LOW PRESSURE ROTOR VIBRATION LEVELS.  DATA INDICATES HARDWARE INSPECTION AND FAN RELUBE REQUIRED.  ACFT GROUNDED. FOUND EXCESSIVE LUBE ON FAN BLADE.  FOUND ALL PLATFORMS HAD TORN SEALS.  R & R ALL PLATFORMS.  FOUND ALL SHIMS TO HAVE COATING LOSS/WORN.  NEW SHIMS INSTALLED. PERFORMED VIBE SURVEY IAW TEST 7.  MM TASK NR 71-00-00-700-814-F00.  FAN BLADE LUBE T/C 78472002 COMPLETE.  VIBES WERE LESS THAN 1.0 UNITS AT ALL POWER SETTINGS.  GROUND VERIFICATION OF SIG, SYS VERIFIED.

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