# NTSB Accident DEN90FA066
> **PIPER PA-31-350** · 1990-02-21 · GREELEY, CO, USA · SERS
## Event
- **NTSB number:** DEN90FA066
- **Event ID:** 20001212X22543
- **Type:** Accident
- **Date:** 1990-02-21
- **Location:** GREELEY, CO, USA
- **Coordinates:** 40.44028, -104.67012
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 2
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** PIPER
- **Model:** PA-31-350
- **Registration:** N3554P
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

THE IMPROPER IDENTIFICATION OF PARTS IN THE PIPER PA-31-350 SERVICE MANUAL PERTAINING TO THE AILERON CABLES. THIS DISCREPANCY RESULTED IN THE IMPROPER INSTALLATION OF THE AILERON CABLES ON THE RIGHT AILERON BELLCRANK BY A MECHANIC DURING THE RECONSTRUCTION OF THE RIGHT WING. THE IMPROPER CONNECTION RESULTED IN A LOSS OF AIRCRAFT CONTROL BY THE PILOT IMMEDIATELY AFTER TAKEOFF. ALSO CAUSAL TO THE ACCIDENT WERE THE INADEQUATE INSPECTION OF THE FLIGHT CONTROL SYSTEM BY A SECOND MECHANIC WITH INSPECTION AUTHORIZATION, AND THE INADEQUATE PREFLIGHT INSPECTION OF THE FLIGHT CONTROL SYSTEM BY THE PILOT PRIOR TO TAKEOFF.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DEN90FA066) · AI Analytics · CC0 1.0*