# SDR 99ZZZX468

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 15, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Dorner DO328100
- Propeller: Hartzl HDE6C3B
- System (JASC): [6111 · Propeller Blade Section](https://openairdocs.org/jasc/6111)
- Part: Screw
- Part number: A32041
- Condition: Broken
- Location: Propeller
- 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/99ZZZX468

## Discrepancy

PROPELLER, S/N HL255, WAS RETURNED FOR SB 5 AND SB 14 COMPLIANCE.  AFTER DISASSEMBLY, INSPECTION REVEALED 1 BROKEN A-3204-1 PRELOAD SET SCREW.  THE SCREW WAS BROKEN INTO TWO PIECES WITH THE B-3368 LOCKNUT STILL ATTACHED TO THE SCREW.  DAMAGE TO THE C-6066-1 PRELOAD PLATE THREADS WAS BEYOND MANUAL LIMITS.  THE PRELOAD PLATE AND SET SCREW WERE RETIRED FROM SERVICE.

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