N91896

Substantial
Minor

SCHWEIZER SGS 1-23DS/N: 28

Accident Details

Date
Saturday, December 11, 2010
NTSB Number
ERA11CA087
Location
Aberdeen, MD
Event ID
20101213X54005
Coordinates
39.552223, -76.195556
Aircraft Damage
Substantial
Highest Injury
Minor
Fatalities
0
Serious Injuries
0
Minor Injuries
1
Uninjured
0
Total Aboard
1

Probable Cause and Findings

The pilot's loss of control during an intentional aerobatic maneuver (spin) resulting in a collision with trees.

Aircraft Information

Registration
Make
SCHWEIZER
Serial Number
28
Engine Type
None
Year Built
1955
Model / ICAO
SGS 1-23D
Aircraft Type
Glider
No. of Engines
0
Seats
1
FAA Model
SGS 1-23D

Registered Owner (Current)

Name
LOWRY WILSON R
Address
22515 CAMP CALVERT RD
City
LEONARDTOWN
State / Zip Code
MD 20650-4704
Country
United States

Analysis

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.

Data Source

Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# ERA11CA087