# NTSB Incident MIA90IA148
> **MITSUBISHI MU-2B** · 1990-07-02 · TYNDALL AFB, FL, USA · NONE
## Event
- **NTSB number:** MIA90IA148
- **Event ID:** 20001212X23754
- **Type:** Incident
- **Date:** 1990-07-02
- **Location:** TYNDALL AFB, FL, USA
- **Coordinates:** 30.05067, -85.549163
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** MITSUBISHI
- **Model:** MU-2B
- **Registration:** N722DM
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** MINR
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

A PROPELLER BLADE FATIGUE FAILURE DUE TO IMPROPER OVERHAUL BY OTHER MAINTENANCE PERSONNEL NOT PERFORMING OVERHAUL IN ACCORDANCE WITH FACTORY SERVICE BULLETINS.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=MIA90IA148) · AI Analytics · CC0 1.0*