# NTSB Accident SEA98LA160
> **McDonnell Douglas 369D** · 1998-08-10 · OSO, WA, USA · MINR
## Event
- **NTSB number:** SEA98LA160
- **Event ID:** 20001211X10957
- **Type:** Accident
- **Date:** 1998-08-10
- **Location:** OSO, WA, USA
- **Coordinates:** 48.180358, -121.669464
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** McDonnell Douglas
- **Model:** 369D
- **Registration:** N1096L
- **FAR Part:** 133
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The separation of the 90 degree gearbox and tail rotor assembly for undetermined reasons followed by the inability of the pilot-in-command to maintain control of the rotorcraft.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=SEA98LA160) · AI Analytics · CC0 1.0*