American Aviation AA-1A
Grantsburg, WI — February 6, 2008
Event Information
| Date | February 6, 2008 |
| Event Type | ACC |
| NTSB Number | CHI08CA076 |
| Event ID | 20080324X00372 |
| Location | Grantsburg, WI |
| Country | USA |
| Coordinates | 45.68389, -92.68723 |
| Airport | Circle T Airport |
| Highest Injury | NONE |
Aircraft
| Make | American Aviation |
| Model | AA-1A |
| Category | AIR |
| FAR Part | 091 |
| Aircraft Damage | SUBS |
Conditions
| Light Condition | DAYL |
| Weather | VMC |
Injuries
| Fatal | 0 |
| Serious | 0 |
| Minor | 0 |
| None | 1 |
| Total Injured | 0 |
Event Location
Probable Cause
The seizure of the left brake due to a buildup of ice between the rotor and brake pad. Contributing to the accident was the snow and slush covered runway, and the snowbank.
Full Narrative
The pilot was performing touch-and-go landings on a turf runway covered with approximately 1-inch of wet snow and slush. The pilot had performed four touch-and-goes without incident. During the fifth landing roll, the pilot initially applied brake pressure to slow the airplane, but then released the brakes to allow the airplane to roll further down the runway. The pilot stated that the left brake seized and the airplane swerved to the left. The airplane was substantially damaged when it impacted a snowbank and nosed over. A post-accident inspection revealed that the left wheel would not rotate because of ice buildup between the rotor and the brake pad. The airplane was equipped with a castering nose gear and on-ground steering was accomplished solely by differential braking.
About This NTSB Record
This aviation event was investigated by the National Transportation Safety Board (NTSB). NTSB investigates all U.S. civil aviation accidents to determine probable cause and issue safety recommendations to prevent future accidents.