# Accident 20070724014509A: Robsin R22, Boise, ID, July 24, 2007

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: July 24, 2007, 08:45 local time
- Place: Boise, ID
- Airport: Boise Air Terminal/Gowen Fld
- Damage: Substantial damage
- Phase of flight: Autorot Descent (Rotorcraft)
- Operating rules: General operating rules (Part 91)
- Operator: SVFS
- Location: 43.5736° N, 116.2269° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=43.5736&lon=-116.2269&mi=10
- Aircraft: N147SH (not matched to a registry record)
- Reported make and model: ROBSIN R22
- Reported engine: LYC O360J2A
- People aboard: 1
- Fatal injuries: 0
- Pilot flight hours: 647 total, 476 in this make and model, 54 in the last 90 days
- NTSB investigation: [NTSB LAX07CA229](https://openairdocs.org/ntsb/LAX07CA229) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20070724014509A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(-23) INSTRUCTOR PILOT STATED THAT DURING PRACTICE AUTOROTATIVE DESCENT, STUDENT ALLOWED AIRSPEED AND ROTOR RPM TO DETERIORATE IN LAST 200 FEET OF GLIDE. INSTRUCTOR ATTEMPTED A LATE RECOVERY, WHILE STUDENT WAS STILL MANIPULATING CONTROLS, CAUSING AIRCRAFT TO STRIKE THE RUNWAY, SEVERING THE TAILBOOM. THE AIRCRAFT BOUNCED A SECOND TIME, AND SPUN OUT OF CONTROL ON THE RUNWAY SURFACE EDGE UNTIL ONE OF THE SKIDS CONTACTED THE DIRT SURFACE ADJACENT TO THE RUNWAY, CAUSING THE HELICOPTER TO COME TO A REST ON ITS LEFT SIDE.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB LAX07CA229](https://openairdocs.org/ntsb/LAX07CA229), Jul 24, 2007: Robinson R22 Beta II (N147SH), Boise, ID, substantial damage. Probable cause: The student pilot's failure to maintain rotor rpm resulting in an excessive descent rate and a hard landing. Factors in the accident were the student's failure to relinquish the controls, and the…

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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