Summary
On July 02, 2011, a Piper PA-18 (N23TT) was involved in an accident near Enumclaw, WA. The accident resulted in 2 minor injuries. The aircraft was destroyed.
The National Transportation Safety Board determined the probable cause of this accident to be: The pilot's failure to maintain an adequate airspeed during an encounter with a mountain wave and downdraft landing.
The pilot reported that he was making an approach to an airstrip for a brief stop. He overflew the field and determined the wind was variable from the north and started his approach. On final he noticed an above average loss of altitude and speed due to a large mountain wave coming over the foothills to the west. He added power to compensate for the downdraft and continued on his landing approach. Once clear of some trees at the approach end of the runway he reduced the power to idle and was again pushed down by another downdraft. The pilot then added full power to arrest the airplane's decent but he did not have enough speed at that time to avoid a hard landing. The airplane slid off the runway and into a guard railing, which substantially damaged the fuselage tubular frame.
This accident is documented in NTSB report WPR11CA308. AviatorDB cross-references NTSB investigation data with FAA registry records to provide comprehensive safety information for aircraft N23TT.
Accident Details
Probable Cause and Findings
The pilot's failure to maintain an adequate airspeed during an encounter with a mountain wave and downdraft landing.
Aircraft Information
Registered Owner (Current)
Analysis
The pilot reported that he was making an approach to an airstrip for a brief stop. He overflew the field and determined the wind was variable from the north and started his approach. On final he noticed an above average loss of altitude and speed due to a large mountain wave coming over the foothills to the west. He added power to compensate for the downdraft and continued on his landing approach. Once clear of some trees at the approach end of the runway he reduced the power to idle and was again pushed down by another downdraft. The pilot then added full power to arrest the airplane's decent but he did not have enough speed at that time to avoid a hard landing. The airplane slid off the runway and into a guard railing, which substantially damaged the fuselage tubular frame.
Data Source
Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# WPR11CA308