# NTSB Accident ANC98LA131
> **Cessna 172** · 1998-08-15 · PALMER, AK, USA · NONE
## Event
- **NTSB number:** ANC98LA131
- **Event ID:** 20001211X10750
- **Type:** Accident
- **Date:** 1998-08-15
- **Location:** PALMER, AK, USA
- **Coordinates:** 61.619461, -148.979064
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** Cessna
- **Model:** 172
- **Registration:** N7966B
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

Fatigue of the forward end of the engine crankshaft resulting in separation of the propeller assembly, and the operator's failure to comply with a required maintenance procedure. A factor was uneven terrain.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ANC98LA131) · AI Analytics · CC0 1.0*