# NTSB Accident IAD01LA058
> **Beech 55** · 2001-05-21 · West Chester, PA, USA · NONE
## Event
- **NTSB number:** IAD01LA058
- **Event ID:** 20010529X01020
- **Type:** Accident
- **Date:** 2001-05-21
- **Location:** West Chester, PA, USA
- **Coordinates:** 39.994445, -75.583335
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** Beech
- **Model:** 55
- **Registration:** N4783M
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** IMC
## Probable cause

The partial blockage of the pitot/static system, which led to an inaccurate airspeed indication, and resulted in an aborted takeoff and runway overrun.  A factor was the wet runway.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=IAD01LA058) · AI Analytics · CC0 1.0*