Perkiomen Valley Airport
Aircraft Accident/Incident Report

Collegeville, Pennsylvania 19426
Saturday, April 16, 2005 10:52 EDT

NTSB Narrative Summary Released at Completion of Accident

As the airplane crossed over a treeline on final approach to the runway, it encountered a sudden downdraft. The airplane then began to descend, and the left wing impacted a tree. The airplane rotated to the left, continued to descend, and impacted a road, before coming to rest inverted. The winds reported at an airport located about 6 miles to the west, at 1054, were from 050 degrees at 12 knots, gusts to 17 knots.

NTSB Probable Cause Narrative

The pilot's inadvertent encounter with a downdraft, which resulted in a collision with trees. A factor related to the accident was the downdraft wind conditions.

Event Information

Type of Event Accident
Event Date 4/16/2005
Event Day of the Week Saturday
Time of Event 1052
Event Time Zone Eastern Daylight Time
Event City Collegeville
Event State PENNSYLVANIA
Event Country --
Zipcode of the event site 19426
Event Date Year 2005
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 401214N
Event Location Longitude 0752548W
Event Location Airport Perkiomen Valley Airport
Event Location Nearest Airport ID N10
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 1
Degrees magnetic from airport 270
Airport Elevation 277
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1054 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 270
Weather Observation Facility ID PTW
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) 6
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 12
Dew Point at event time (in degress fahrenheit) -9
Wind Direction (degrees magnetic) 40
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 12
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 19
Altimeter Setting at event time (in. Hg) 30.6
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 18038
NTSB Notification Source FA EROC
NTSB Notification Date Apr 18 2005 12:00AM
NTSB Notification Time 700
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jul 7 2005 10:33AM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office Allentown, PA FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N7653X
NTSB Number NYC05CA072
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cessna
Aircraft Model 172B
Aircraft Series Identifier --
Aircraft Serial Number 17248153
Certified Max Gross Weight 2200
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Nov 10 2004 12:00AM
Airframe hours since last inspection 10
Airframe Hours 2772
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Claudia E. Garner
Aircraft Owner Street Address --
Aircraft Owner City Pennsburg
Aircraft Owner State PA
Aircraft Owner Country USA
Aircraft Owner Zipcode 18073
Operator is an individual? No
Operator Name --
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City --
Operator State --
Operator Country --
Operator Zip code --
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code 40N
Departure City Chester County
Departure State PA
Departure Country USA
Departure Time 1015
Departure Time Zone EDT
Destination Same as Local Flt crash at destination city
Destination Airport Code N10
Destination City Collegeville
Destination State PA
Destination Country USA
Specific Phase of Flight Landing
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record May 3 2005 11:42AM
User who most recently changed record PEAR
Since inspection or accident Last Inspection
Event Location Runway Number and Location 09
Runway Length 2950
Runway Width 40
Sight Seeing flight No
Air Medical Flight No
Medical Flight --