Mccall Municipal Airport
Aircraft Accident/Incident Report

Mccall, Idaho 83638
Sunday, September 28, 2003 13:30 MDT

NTSB Narrative Summary Released at Completion of Accident

Upon returning to the airport after a local flight, the pilot sequenced himself into the traffic pattern behind an Aviat Husky that was following a De Havilland Beaver. Just after he rolled out on final with his gear down and his flaps retracted for a no-flap landing, the pilot noticed that the Beaver was pulling off of the runway. He therefore continued on final at an airspeed about 10 to 15 knots above the aircraft's no-flap stall speed. As he neared the runway in calm wind conditions, the pilot concluded that the Husky, which had landed just beyond the threshold, would not be exiting the runway before he touched down. He therefore decided to execute a go-around. As he was adding full power, the aircraft encountered a disturbance most likely created by the Beaver, resulting in the left wing suddenly dropping and the aircraft losing about 50 feet of altitude. As the engine revved to full power, the pilot was able get the wings level and stop the altitude loss, but his remedial action was insufficient to fly out of the disturbance, and almost immediately thereafter the right wing dropped and the aircraft fell another 20 feet onto the terrain.

NTSB Probable Cause Narrative

The inadequacy of the pilot's remedial action taken in an attempt to fly out of an encounter with the wake vortex turbulence created by a preceding aircraft while on short final to land. Factors include calm winds in the area of the final approach course, and the pilot's inadvertent encounter with wake vortex turbulence.

Event Information

Type of Event Accident
Event Date 9/28/2003
Event Day of the Week Sunday
Time of Event 1330
Event Time Zone Mountain Daylight Time
Event City McCall
Event State IDAHO
Event Country --
Zipcode of the event site 83638
Event Date Year 2003
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 445323N
Event Location Longitude 1160605W
Event Location Airport McCall Municipal
Event Location Nearest Airport ID MYL
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 5021
Weather Briefing Completeness --
Investigator's weather source Witness
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
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) 30
Air Temperature at event time (in degrees celsius) 24
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator Calm
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None --
Injury Total Serious 2
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 15250
NTSB Notification Source FAA operations Center
NTSB Notification Date Sep 28 2003 12:00AM
NTSB Notification Time 1315
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Mar 30 2004 8:14AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office Boise FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N234KC
NTSB Number SEA03LA196
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 Beech
Aircraft Model T-34 (A-45)
Aircraft Series Identifier --
Aircraft Serial Number G789
Certified Max Gross Weight 2950
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 2
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Kris E. Cox
Aircraft Owner Street Address --
Aircraft Owner City McCall
Aircraft Owner State ID
Aircraft Owner Country USA
Aircraft Owner Zipcode 83638
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 Yes
Departure Airport Code MYL
Departure City McCall
Departure State ID
Departure Country USA
Departure Time 1130
Departure Time Zone MDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code MYL
Destination City --
Destination State --
Destination Country --
Specific Phase of Flight Approach - VFR pattern - final approach
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Jan 22 2004 5:39PM
User who most recently changed record STAM
Since inspection or accident --
Event Location Runway Number and Location 34
Runway Length 6107
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --