# SDR CA121010007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 10, 2012
- Submitted: September 14, 2015
- Operation: General aviation
- Make and model: Robsin R22BETA
- Engine: Lyc O320B2C
- System (JASC): [6230 · Main Rotor Mast/Swashplate](https://openairdocs.org/jasc/6230)
- Part: Swashplate
- Condition: Worn
- Location: Main Rotor
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA121010007

## Discrepancy

(CAN) TTAF 4149.5, ROD END PAL NUT WEARING INTO THE SWASH-PLATES EAR.  AN ENGINEER HAD INDICATED THAT HE FOUND 2 SEPARATE HELICOPTERS WITH THE PAL NUT ON 1 OF THE 2 FORWARD VERTICAL PUSH-PULL TUBES WEARING INTO THE LOWER SIDE OF THE SWASH-PLATE EAR.  WE DID A FLEET WIDE CHECK OF THE AIRCRAFT UNDER OUR CONTROL AND HAVE FOUND, OF 5 AIRCRAFT CHECK, 2 WERE FOUND WITH PUSH PULL TUBE PAL NUT INTERFERING WITH SWASHPLATE.  AFT VERTICAL PUSH-PULL TUBE PAL NUT WEARING INTO THE LOWER SIDE OF THE EAR.  RIGGED FLIGHT CONTROL PUSH PULL TUBE TO INCREASE CLEARANCE, INSPECTED SWASHPLATE.  AFT VERTICAL PUSH-PULL TUBE PAL NUT CHIPPED THE PAINT ON THE LOWER SIDE OF THE EAR.  ADJUSTED PUSH PULL TUBE FOR MORE CLEARANCE.

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