# NTSB Accident DEN90FA017
> **CESSNA 172RG** · 1989-11-01 · LARAMIE, WY, USA · FATL
## Event
- **NTSB number:** DEN90FA017
- **Event ID:** 20001213X29580
- **Type:** Accident
- **Date:** 1989-11-01
- **Location:** LARAMIE, WY, USA
- **Coordinates:** 41.309478, -105.579521
## Injuries
- **Highest injury:** FATL
- **Fatal:** 1
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** CESSNA
- **Model:** 172RG
- **Registration:** N4825V
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DUSK
- **Weather:** IMC
## Probable cause

THE LOSS OF CONTROL OF THE AIRPLANE IN INSTRUMENT METEOROLOGICAL CONDITIONS AFTER THE PILOT BECAME SPATIALLY DISORIENTED. CONTRIBUTING TO THE ACCIDENT WAS THE FAILURE OF THE VACUUM SYSTEM WHICH RENDERED THE VACUUM/GYRO INSTRUMENTS INOPERATIVE. ALSO CONTRIBUTING TO THIS FAILURE WAS THE IMPROPER INSTALLATION OF THE VACUUM PUMP BY UNKNOWN PERSON(S).

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DEN90FA017) · AI Analytics · CC0 1.0*