# NTSB Accident DEN91LA025
> **GRUMMAN AA1B** · 1990-12-15 · ROSWELL, NM, USA · NONE
## Event
- **NTSB number:** DEN91LA025
- **Event ID:** 20001212X24755
- **Type:** Accident
- **Date:** 1990-12-15
- **Location:** ROSWELL, NM, USA
- **Coordinates:** 33.639911, -104.379737
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** GRUMMAN
- **Model:** AA1B
- **Registration:** N1638R
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

LOW CYLINDER COMPRESSION AND FOULED SPARK PLUG.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DEN91LA025) · AI Analytics · CC0 1.0*