# SDR 97ZZZX4471

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 27, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N437AL](https://openairdocs.org/aircraft/N437AL), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53141
- System (JASC): [3270 · Auxiliary Gear (Tail Skid)](https://openairdocs.org/jasc/3270)
- Part: Spring Pin
- Part number: MS171655
- Condition: Broken
- Location: Tail Skid
- Part time: 473 hours
- Component: 206020110103
- 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/97ZZZX4471

## Discrepancy

PIN WAS BEING REMOVED TO INSTALL AN AN4-15A BOLT IN ITS PLACE AS A PRECAUTION AFTER THE TAIL SKID OF ANOTHER 407 AIRCRAFT FELL OFF IN-FLIGHT.  WHEN THE SPRING PIN WAS REMOVED, IT CAME APART IN TWO PIECES.  SUBMITTER STATED INSTALL AN4 BOLT IN PLACE OF THE SPRING PIN.

---
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.