# NTSB Accident ERA12LA117
> **PIPER PA-44-180** · 2011-12-19 · Lawrenceville, GA, USA · NONE
## Event
- **NTSB number:** ERA12LA117
- **Event ID:** 20111221X34021
- **Type:** Accident
- **Date:** 2011-12-19
- **Location:** Lawrenceville, GA, USA
- **Coordinates:** 33.978054, -83.962219
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** PIPER
- **Model:** PA-44-180
- **Registration:** N790GK
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The mechanic's improper installation and lubrication of the bushing on the right main landing gear truss assembly, which resulted in the landing gear not locking in the down position.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ERA12LA117) · AI Analytics · CC0 1.0*