# SDR 20010403CW003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 16, 2000
- Submitted: April 3, 2001
- Operation: General aviation
- Aircraft: [N74231](https://openairdocs.org/aircraft/N74231), registered now
- Make and model: Blanca 1413
- Aircraft serial: 1344
- Engine: Frnkln 6A4150*
- System (JASC): [6113 · Propeller Spinner Section](https://openairdocs.org/jasc/6113)
- Part: Spinner
- Part number: B2800
- Condition: Destroyed
- Location: Prop Assy
- Part time: 375 hours
- Stage of operation: CL
- How discovered: O
- Nature of condition: E
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/20010403CW003

## Discrepancy

ON CLIMBOUT A VIBRATION DEVELOPED THAT CONTINUED TO INCREASE IN AMPLITUDE.  THE FLIGHT WAS ABORTED.  SUBSEQUENT INVESTIGATION REVEALED THAT THE FORWARD PLASTIC SPINNER BULKHEAD HAD FAILED AROUND ITS PERIPHERY ALLOWING THE SPINNER TO WOBBLE.  CONTINUED OPERATION IN THIS CONDITION WOULD HAVE RESULTED IN FAILURE OF THE AFT BULKHEAD AND DEPARTURE OF THE SPINNER FROM THE AIRCRAFT.

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