Summary
On May 11, 2008, a A. Schleicher Gmbh & Co. ASW 27-18 (N8829A) was involved in an accident near Peoria, AZ. The accident resulted in 1 minor injury. The aircraft sustained substantial damage.
The National Transportation Safety Board determined the probable cause of this accident to be: The pilot's misjudged distance and altitude while on final approach to land. A factor contributing to the accident was a downdraft.
At the conclusion of a cross-country flight, the glider pilot arrived at his intended destination and entered a normal left-hand traffic pattern to runway 23R. The pilot reported that he observed the wind conditions on the downwind and base legs, and he maintained a normal traffic pattern. The wind was from 190 degrees at 10 knots. The initial approach to the runway was normal. However, the pilot said that on short final approach he suddenly encountered a "very heavy downward sink, accompanied by a sharp drop in IAS [indicated air speed]." The pilot responded by retracting the wing spoilers and adjusting the glider's pitch to maintain the requisite approach speed. The downdraft continued, and despite the performance capabilities of his glider the pilot was unable to glide to the runway.
This accident is documented in NTSB report LAX08CA136. AviatorDB cross-references NTSB investigation data with FAA registry records to provide comprehensive safety information for aircraft N8829A.
Accident Details
Probable Cause and Findings
The pilot's misjudged distance and altitude while on final approach to land. A factor contributing to the accident was a downdraft.
Aircraft Information
Registered Owner (Current)
Analysis
At the conclusion of a cross-country flight, the glider pilot arrived at his intended destination and entered a normal left-hand traffic pattern to runway 23R. The pilot reported that he observed the wind conditions on the downwind and base legs, and he maintained a normal traffic pattern. The wind was from 190 degrees at 10 knots. The initial approach to the runway was normal. However, the pilot said that on short final approach he suddenly encountered a "very heavy downward sink, accompanied by a sharp drop in IAS [indicated air speed]." The pilot responded by retracting the wing spoilers and adjusting the glider's pitch to maintain the requisite approach speed. The downdraft continued, and despite the performance capabilities of his glider the pilot was unable to glide to the runway. The pilot turned to avoid a set of power lines, and a wing contacted the ground. The glider touched down hard on the flat open terrain several hundred yards short of the threshold. As the glider came to a stop, the fuselage severed in front of the vertical fin, the horizontal stabilizer broke in half, and the fuselage was deformed.
Data Source
Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# LAX08CA136