# NTSB Accident ERA24FA097
> **BEECH C99** · 2024-01-26 · Londonderry, NH, USA · SERS
## Event
- **NTSB number:** ERA24FA097
- **Event ID:** 20240126193708
- **Type:** Accident
- **Date:** 2024-01-26
- **Location:** Londonderry, NH, USA
- **Coordinates:** 42.85405, -71.415783
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** BEECH
- **Model:** C99
- **Registration:** N53RP
- **FAR Part:** 135
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot’s failure to ensure that the cockpit door was secured before flight, which resulted in its separation during initial climb and a subsequent loss of control.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ERA24FA097) · AI Analytics · CC0 1.0*