# NTSB Incident CHI99IA096
> **Cessna T210R** · 1999-02-20 · TINLEY PARK, IL, USA · NONE
## Event
- **NTSB number:** CHI99IA096
- **Event ID:** 20001205X00127
- **Type:** Incident
- **Date:** 1999-02-20
- **Location:** TINLEY PARK, IL, USA
- **Coordinates:** 41.569747, -87.799247
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 3
- **Total aboard:** 3
## Aircraft
- **Make:** Cessna
- **Model:** T210R
- **Registration:** N7687U
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** MINR
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

the improper installation of the pressure oil line 'B' nut by maintenance personnel.  Contributing to the incident were the loose pressure oil line 'B' nut and separation of the propeller from the aircraft.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI99IA096) · AI Analytics · CC0 1.0*