# NTSB Accident MIA99LA233
> **Cessna 172RG** · 1999-08-21 · MIAMI, FL, USA · NONE
## Event
- **NTSB number:** MIA99LA233
- **Event ID:** 20001212X19598
- **Type:** Accident
- **Date:** 1999-08-21
- **Location:** MIAMI, FL, USA
- **Coordinates:** 25.649021, -80.41056
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** Cessna
- **Model:** 172RG
- **Registration:** N6231V
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The delay by the pilot-in-command to extend the gear resulting in collapse of the main landing gear after touchdown. Factors in the accident were the inoperative gear warning system associated with the throttle due to the broken wire at the throttle microswitch, and the overstress failure of the rudder trim chain master link clip which resulted in disconnection of the rudder trim while trimmed full left.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=MIA99LA233) · AI Analytics · CC0 1.0*