# NTSB Accident ANC11LA039
> **CESSNA 170A** · 2011-05-28 · Wasilla, AK, USA · NONE
## Event
- **NTSB number:** ANC11LA039
- **Event ID:** 20110528X22348
- **Type:** Accident
- **Date:** 2011-05-28
- **Location:** Wasilla, AK, USA
- **Coordinates:** 61.538887, -149.539443
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** CESSNA
- **Model:** 170A
- **Registration:** N1742D
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's loss of directional control during landing, which resulted in a runway excursion. Contributing to the accident were the effects of multiple modifications to the main and tailwheel landing gear through the supplemental type certificate and FAA field approval process, which adversely changed their geometry, and resulted in degraded controllability during landing.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ANC11LA039) · AI Analytics · CC0 1.0*