# SDR MKHR2018091300000

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 8, 2018
- Submitted: September 13, 2018
- Operation: Air carrier
- Aircraft: [N369MH](https://openairdocs.org/aircraft/N369MH), registered now
- Make and model: Hughes 369D
- Aircraft serial: 380287D
- Aircraft time: 14,418 hours, 13,009 cycles
- Engine: Allsn 250C20B
- Engine time: 17,264 hours, 13,017 cycles
- System (JASC): [6420 · Tail Rotor Head](https://openairdocs.org/jasc/6420)
- Part: Bolt
- Part number: 369D16023
- Condition: Sheared
- Location: Tail Rotor
- Part time: 2,712 hours
- Component: Tail Rotor Hub
- Component part number: 369D2170121
- Stage of operation: CR
- 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/MKHR2018091300000

## Discrepancy

DURING CRUISE FLIGHT THE PILOT EXPERIENCED AN EXCESSIVE TAIL ROTOR VIBRATION. THE PILOT THEN EXECUTED A PRECAUTIONARY LANDING. WHEN CREW ARRIVED TO INVESTIGATE THE VIBRATION THE INITIAL DISCOVERED WAS THAT THE OUTBOARD TAIL ROTOR FORK BOLT WAS SHEARED.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.