# SDR A109040705DG

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2005
- Submitted: April 7, 2005
- Operation: Air carrier
- Aircraft: N22RX
- Make and model: Agusta A109
- Aircraft serial: 7155
- Aircraft time: 6,534 hours
- System (JASC): [6510 · Tail Rotor Drive Shaft](https://openairdocs.org/jasc/6510)
- Part: Drive Assy
- Condition: Damaged
- Location: Tail Rotor
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/A109040705DG

## Discrepancy

UPON UNCOWLING FOR A ROUTINE 600 HOUR INSPECTION, THE MAINTENANCE STAFF NOTED THE REMAINS OF A TAIL ROTOR DRIVE SHAFT RUBBER COLLAR (P/N:  109-0425-08-1) LAYING ON THE DECK BELOW ITS RESPECTIVE BEARING HANGAR.  THE RUBBER COLLAR APPEARS HEAT DAMAGED AND BRITTLE, THE BEARING APPEARS TO HAVE EXCESSIVE DRAG.  THE DRIVE SHAFT SHOWS INDICATIONS OF THE DRIVESHAFT SPINNING INSIDE THE COLLAR AND CAUSING EXCESSIVE WEAR.   THIS BEARING ASSEMBLY IS DIFFICULT TO VISUALIZE ON DAILY INSPECTIONS BECAUSE OF ITS LOCATION.

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