# NTSB Accident MIA91LA221
> **JOHN H. LOGAN LOGANAIR I** · 1991-09-21 · GAINESVILLE, FL, USA · FATL
## Event
- **NTSB number:** MIA91LA221
- **Event ID:** 20001212X18149
- **Type:** Accident
- **Date:** 1991-09-21
- **Location:** GAINESVILLE, FL, USA
## Injuries
- **Highest injury:** FATL
- **Fatal:** 2
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** JOHN H. LOGAN
- **Model:** LOGANAIR I
- **Registration:** N931JL
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** NDRK
- **Weather:** IMC
## Probable cause

THE NON-INSTRUMENT RATED PILOT IN COMMAND'S DECISION TO DEPART UNDER SPECIAL VISUAL FLIGHT RULE CLEARANCE IN INSTRUMENT FLIGHT RULES CONDITIONS DURING DARKNESS WITH A FAILED VACUUM PUMP AND RESULTING INOPERATIVE FLIGHT INSTRUMENTS WHICH RESULTED IN AN INFLIGHT LOSS OF CONTROL DUE TO SPATIAL DISORIENTATION.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=MIA91LA221) · AI Analytics · CC0 1.0*