# NTSB Incident DEN90IA012
> **MCDONNELL DOUGLAS DC-9** · 1989-10-18 · MONTE VISTA, CO, USA · MINR
## Event
- **NTSB number:** DEN90IA012
- **Event ID:** 20001213X29581
- **Type:** Incident
- **Date:** 1989-10-18
- **Location:** MONTE VISTA, CO, USA
- **Coordinates:** 37.569057, -106.139228
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 1
- **Uninjured:** 102
- **Total aboard:** 103
## Aircraft
- **Make:** MCDONNELL DOUGLAS
- **Model:** DC-9
- **Registration:** N922RW
- **FAR Part:** 121
- **Engines:** 2
- **Damage:** MINR
## Conditions
- **Light:** NDRK
- **Weather:** VMC
## Probable cause

THE POOR INFLIGHT PLANNING AND DECISIONS MADE BY THE FLIGHT CREW FOLLOWING THE FAILURE OF THE NUMBER TWO GENERATOR CONSTANT SPEED DRIVE UNIT. CONTRIBUTING FACTORS TO THE ACCIDENT WERE THE FAILURE OF THE NO. 2 GENERATOR CONSTANT SPEED DRIVE UNIT AND THE CREW'S INADVERTENT SHUT DOWN OF THE WRONG GENERATOR WHICH RESULTED IN A COMPLETE LOSS OF ELECTRICAL POWER.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DEN90IA012) · AI Analytics · CC0 1.0*