# NTSB Accident LAX07CA229
> **Robinson R22 Beta II** · 2007-07-24 · Boise, ID, USA · MINR
## Event
- **NTSB number:** LAX07CA229
- **Event ID:** 20070927X01465
- **Type:** Accident
- **Date:** 2007-07-24
- **Location:** Boise, ID, USA
- **Coordinates:** 43.573612, -116.226943
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 2
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** Robinson
- **Model:** R22 Beta II
- **Registration:** N147SH
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## 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 CFI's inadequate supervision.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX07CA229) · AI Analytics · CC0 1.0*