SCHWEIZER SGS 1-23D
Aberdeen, MD — December 11, 2010
Event Information
| Date | December 11, 2010 |
| Event Type | ACC |
| NTSB Number | ERA11CA087 |
| Event ID | 20101213X54005 |
| Location | Aberdeen, MD |
| Country | USA |
| Coordinates | 39.55222, -76.19556 |
| Airport | Harford County Airport |
| Highest Injury | MINR |
Aircraft
| Make | SCHWEIZER |
| Model | SGS 1-23D |
| Category | GLI |
| FAR Part | 091 |
| Aircraft Damage | SUBS |
Conditions
| Light Condition | DAYL |
| Weather | VMC |
Injuries
| Fatal | 0 |
| Serious | 0 |
| Minor | 1 |
| None | 0 |
| Total Injured | 1 |
Event Location
Probable Cause
The pilot's loss of control during an intentional aerobatic maneuver (spin) resulting in a collision with trees.
Full Narrative
According to the pilot of the glider, on his second flight of the day, he initiated a spin to the right around 3,200 feet. After approximately three-quarters of a turn, the pilot attempted to recover from the spin by applying left rudder. The pilot stated that he felt no resistance upon application of the rudder, and that the glider was unresponsive. As he neared the ground, the pilot was able to maneuver toward trees. The glider impacted a tree, resulting in substantial damage to the wings. The glider remained in the tree for several days due to snow and ice storms before it could be recovered. Post accident examination by a Federal Aviation Administration Inspector revealed that the rudder turnbuckles were set per the manual and the rudder return springs were intact and not stretched. The rudder controls functioned properly when manipulated.
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.