# SDR T212003F00000

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 22, 2001
- Submitted: March 13, 2003
- Operation: Air carrier
- Aircraft: N727WW
- Make and model: Bolkms BO105LSA3
- Aircraft serial: 2037
- Engine: Allsn 250C*
- System (JASC): [5530 · Vertical Stabilizer](https://openairdocs.org/jasc/5530)
- Part: Structure
- Part number: 10530401415
- Condition: Cracked
- Location: Vertical Fin
- Part time: 1,453 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/T212003F00000

## Discrepancy

AT DAILY INSPECTION CHECK, CRACKS WERE FOUND, THROUGH INSPECTION PLATE, AT TOP OF VERTICAL FIN.  CRACK ABOUT 1.5 INCH LONG ON NOSE RIB (PN105-3040120/ 1053041415), WHERE THE TAIL ROTOR GEAR BOX ATTACHED, ALSO RIVET MISSING.  PROBABLE CAUSE, VIBRATION.

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