# SDR QMLDMG2181

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 4, 2011
- Submitted: May 11, 2011
- Operation: Air carrier
- Aircraft: [N253AM](https://openairdocs.org/aircraft/N253AM), registered now
- Make and model: Urocop EC 135 P2
- Registry model: [Urocop EC 135 P2](https://openairdocs.org/model/eurocopter-deutschland-ec-135-p2) (OpenAirDocs)
- Aircraft serial: 0663
- Aircraft time: 984 hours, 3,278 cycles
- System (JASC): [6420 · Tail Rotor Head](https://openairdocs.org/jasc/6420)
- Part: Torsion Bar
- Part number: 350A33318000
- Part serial: M17687
- Condition: Mismanufactured
- Location: Tail Rotor Head
- 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/QMLDMG2181

## Discrepancy

THIS WAS A NEW PART AND WAS BEING INSTALLED INTO THIS TAIL ROTOR HEAD.  BORE HOLE MISALIGNED, LAMINATES BUCKLES WHEN PARTS ARE INSTALLED.

---
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.