# NTSB Accident DCA00MA079
> **Douglas DC-9-32** · 2000-08-08 · GREENSBORO, NC, USA · MINR
## Event
- **NTSB number:** DCA00MA079
- **Event ID:** 20001212X21701
- **Type:** Accident
- **Date:** 2000-08-08
- **Location:** GREENSBORO, NC, USA
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 13
- **Uninjured:** 50
- **Total aboard:** 63
## Aircraft
- **Make:** Douglas
- **Model:** DC-9-32
- **Registration:** N838AT
- **FAR Part:** 121
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** NR
- **Weather:** VMC
## Probable cause

A phase-to-phase arc in the left heat exchanger cooling fan relay, which ignited the surrounding wire insulation and other combustible materials within the electrical power center panel. Contributing to the left heat exchanger fan relay malfunction was the unauthorized repair that was not to the manufacturer's standards and the circuit breakers' failure to recognize an arc-fault.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DCA00MA079) · AI Analytics · CC0 1.0*