# NTSB Accident ERA21LA159
> **CESSNA 210** · 2021-03-18 · Marianna, FL, USA · NONE
## Event
- **NTSB number:** ERA21LA159
- **Event ID:** 20210321102790
- **Type:** Accident
- **Date:** 2021-03-18
- **Location:** Marianna, FL, USA
- **Coordinates:** 30.838221, -85.182224
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 3
- **Total aboard:** 3
## Aircraft
- **Make:** CESSNA
- **Model:** 210
- **Registration:** N7736K
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The failure of the alternator control unit housing plug connection, which resulted in insufficient battery power to fully extend the landing gear. Contributing to the accident was the pilot’s decision to not use the emergency gear extension handle to secure the gear prior to landing.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ERA21LA159) · AI Analytics · CC0 1.0*