# NTSB Accident CHI97LA301
> **Universal D-16** · 1997-09-25 · HOWELL, MI, USA · NONE
## Event
- **NTSB number:** CHI97LA301
- **Event ID:** 20001208X08821
- **Type:** Accident
- **Date:** 1997-09-25
- **Location:** HOWELL, MI, USA
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** Universal
- **Model:** D-16
- **Registration:** N110N
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

the emergency landing gear extension system being impeded by flap extension.  Factors contributing to this accident are the instructor pilot's intentional feathering of the airplane's left propeller, the instructor pilot's lack of familiarity with the airplane, and insufficient information provided in the pilot's operating handbook warning the operator that extending flaps during emergency gear extension will interrupt hydraulic pressure to the system.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI97LA301) · AI Analytics · CC0 1.0*