GENERAL INFORMATION FOR NTSB REPORT: ANC00LA057
Data Source NTSB AVIATION ACCIDENT/INCIDENT DATABASE
NTSB Report Nbr ANC00LA057
Event Id 20001212X20935
Local Date 05/09/2000
Local Time 1707
State AK
Airport Name MERRILL FIELD
Event Type ACCIDENT
Injury Severity NONE
Record Status
Mid Air Collision NO
Event Location ON AIRPORT/AIRSTRIP

WEATHER INFORMATION
Weather Briefing Complete NOT PERTINENT
Basic Weather Conditions VISUAL METEOROLOGICAL COND
Light Condition DAY
Cloud Condition SCATTERED
Cloud Height above Ground Level (ft) 7000
Ceiling Height above Ground Level (ft) 20000
Cloud Type OVERCAST
Visibility RVR (ft) 0
Visibility RVV (sm) 0
Visibility (sm) 10
Wind Direction (deg) 270
Wind Condition Flag U
Wind Speed (knots) 10
Wind Condition Indicated Unknown

AIRCRAFT INFORMATION
Aircraft 1
Type of Operation PART 91: GENERAL AVIATION
Registration Number N2785K
Aircraft Make CESSNA
Aircraft Model 180
Aircraft Series K
Aircraft Damage SUBSTANTIAL
Aircraft Fire NONE
Aircraft Explosion NONE
Aircraft Type AIRPLANE
Aircraft Homebuilt UNKNOWN
Phase of Flight UNDEFINED
Aircraft Use PERSONAL
Flight Plan Filed NONE
Operator Name PAUL R. GRONHOLDT
Operator Doing Business As
Owner Name GRONHOLDT DEVELOPMENT CO.
Number of Seats 4
Number of Engines 1
ELT Installed YES
ELT Operated YES
Departure Airport Id SPD
Departure City SAND POINT
Departure State ALASKA
Last Departure Point NO
Destination Local CRASH AT DESTINATION CITY
Destination Airport Id
Destination City
Runway Id 24
Runway Length 4000
Runway Width 100
Air Carrier Operating Certificates NO
Air Carrier Other Operating Certificates UNKNOWN
Rotocraft/Agriculture Operating Certificate UNKNOWN
Cert Max Gross Wgt 2800

ENGINE INFORMATION

Aircraft 1 - Engine : #1
Engine Manufactuer Continental
Engine Model O-470U
Engine Horsepower 230
Engine Thrust HP
Carb/Injection CARBURETOR

INJURY INFORMATION
Injury Summary for Aircraft 1
Fatal Serious Minor None
Crew 0 0 0 0
Pass 0 0 0 0
Total 0 0 0 1
Sequence of Events for Aircraft 1
Occurrence #1
LOSS OF CONTROL - ON GROUND/WATER
Phase of Operation: LANDING - ROLL

Events Sequence for Occurrence #1 of Aircraft 1
Event Seq # Event Group Code Subject Modifier Personnel Cause/Factor
1 2 GROUND LOOP/SWERVE INADVERTENT PILOT IN COMMAND CAUSE




AIRCRAFT 1 PRELIMINARY REPORT


On May 9, 2000, about 1707 Alaska daylight time, a tailwheel and tundra tire equipped Cessna 180K airplane, N2785K, sustained substantial damage while landing at Merrill Field, Anchorage, Alaska. The airplane was being operated as a visual flight rules (VFR) personal flight under Title 14, CFR Part 91, when the accident occurred. The solo commercial pilot was not injured. Visual meteorological conditions prevailed, and no flight plan was filed. The flight originated about 1220, from the Sand Point Airport, Sand Point, Alaska. During a telephone conversation with the National Transportation Safety Board investigator-in-charge on May 11, the pilot reported that while landing on runway 24, during the landing roll, the right main wheel "grabbed", and the airplane ground looped to the right. During the ground loop, the left wing struck the runway, and the airplane nosed down. The airplane sustained substantial damage to the left wing leading edge, and left wing main spar. The Merrill Field weather observation at the time of the accident consisted of: Sky conditions and ceiling, 7,000 scattered, 20,000 overcast; visibility, 10 statute miles; wind, 270 degrees (magnetic) at 10 knots; altimeter, 29.99 inHg. The pilot noted that there were no preaccident mechanical anomalies with the airplane.

AIRCRAFT 1 FINAL REPORT


The solo commercial pilot was landing on runway 24, in a tailwheel and tundra tire equipped airplane on a paved runway. The pilot stated that after landing the airplane's right main wheel 'grabbed,' and the airplane ground looped to the right. During the ground loop, the left wing struck the runway, and the airplane nosed down. The airplane sustained substantial damage to the left wing leading edge, and left wing main spar. The pilot noted that there were no preaccident mechanical anomalies with the airplane.

AIRCRAFT 1 CAUSE REPORT


The pilot's inadvertent ground loop/swerve during landing.


END REPORT