# SDR 97ZZZX4094

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 21, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N92LG
- Make and model: Snias AS350B2
- Aircraft serial: 2575
- System (JASC): [6220 · Main Rotor Head](https://openairdocs.org/jasc/6220)
- Part: Pin Boss
- Part number: 350A3183106
- Condition: Axial Slippage
- Location: M/R Sleeve
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX4094

## Discrepancy

DURING DAILY INSPECTION, NOTICED ONE M/R PIN SLIGHTLY UP ON YELLOW AND BLUE BLADE.  UPON CLOSE EXAMINATION BY REMOVING M/R BLADES, FOUND THAT M/R PIN BOSSES HAD AXIALLY MOVED TO CAUSE PIN EXTRACTION DIFFICULTY AND SOME VIBRATIONS AS REPORTED EARLIER BY PILOT.  FOUND NO MM REFERENCE EXCEPT IN 05.53.00.603 M/R BLADE IMPACT (NO IMPACT HAD OCCURRED).  NOTE:  THERE ARE 6 TOTAL SLEEVES, 3 UPPER AND 3 LOWER, FOUND 5 M/R PIN BOSSES HAD AXIALLY MOVED.

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