# NTSB Accident CHI94LA087
> **PIPER PA-44-180** · 1994-02-13 · GRAND FORKS, ND, USA · NONE
## Event
- **NTSB number:** CHI94LA087
- **Event ID:** 20001206X00734
- **Type:** Accident
- **Date:** 1994-02-13
- **Location:** GRAND FORKS, ND, USA
- **Coordinates:** 47.909843, -97.069419
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** PIPER
- **Model:** PA-44-180
- **Registration:** N190ND
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

the improper maintenance installation (cotter pin) by other maintenance personnel.  Factors were main landing gear scissors not safetied properly and extension of landing gear not possible by pilot-in-command (CFI).

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI94LA087) · AI Analytics · CC0 1.0*