# NTSB Accident CHI89DEC02
> **PIPER PA-28R-201** · 1989-01-21 · BRIGHTON, MI, USA · SERS
## Event
- **NTSB number:** CHI89DEC02
- **Event ID:** 20001213X27548
- **Type:** Accident
- **Date:** 1989-01-21
- **Location:** BRIGHTON, MI, USA
- **Coordinates:** 42.530788, -83.779945
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** PIPER
- **Model:** PA-28R-201
- **Registration:** N3536M
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

INSTALLATION OF AN IMPROPER OIL DRAIN VALVE BY OTHER MAINTENANCE PERSONNEL AND THEIR FAILURE TO FOLLOW THE APPLICABLE AIRWORTHINESS DIRECTIVE (AD 81-11-02/R1), RESULTING IN SUBSEQUENT INTERFERENCE BETWEEN THE LANDING GEAR AND OIL DRAIN VALVE.  THIS CAUSED THE VALVE TO MOVE OPEN & LEAK, WHICH RESULTED IN THE LOSS OF ALL ENGINE OIL.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI89DEC02) · AI Analytics · CC0 1.0*