# NTSB Accident CHI99LA235
> **Piper J-3C** · 1999-07-17 · MAPLE LAKE, MN, USA · SERS
## Event
- **NTSB number:** CHI99LA235
- **Event ID:** 20001212X19195
- **Type:** Accident
- **Date:** 1999-07-17
- **Location:** MAPLE LAKE, MN, USA
- **Coordinates:** 45.230098, -94.000373
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 2
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** Piper
- **Model:** J-3C
- **Registration:** N88593
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's inadequate preflight planning that resulted in exceeding the maximum gross weight of the airplane and the subsequent inadvertent aerodynamic stall.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI99LA235) · AI Analytics · CC0 1.0*