# NTSB Incident DEN93IA027
> **BOEING 757-222** · 1993-02-14 · GRAND JUNCTION, CO, USA · NONE
## Event
- **NTSB number:** DEN93IA027
- **Event ID:** 20001211X11816
- **Type:** Incident
- **Date:** 1993-02-14
- **Location:** GRAND JUNCTION, CO, USA
- **Coordinates:** 39.109409, -108.529991
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 47
- **Total aboard:** 47
## Aircraft
- **Make:** BOEING
- **Model:** 757-222
- **Registration:** N508UA
- **FAR Part:** 121
- **Engines:** 2
- **Damage:** —
## Conditions
- **Light:** NDRK
- **Weather:** VMC
## Probable cause

FAILURE OF THE LEFT GENERATOR CONTROL UNIT (GCU), INTEGRATED DRIVE GENERATOR (IDG), RIGHT (SIDE) ENGINE INDICATOR AND CREW ALERT SYSTEM (EICAS), AND BUS TIE BAR (BTB).

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DEN93IA027) · AI Analytics · CC0 1.0*