GENERAL INFORMATION FOR NTSB REPORT: ANC00LA089
Data Source |
NTSB AVIATION ACCIDENT/INCIDENT DATABASE |
NTSB Report Nbr |
ANC00LA089 |
Event Id |
20001212X21356 |
Local Date |
07/14/2000 |
Local Time |
1930 |
State |
AK |
Airport Name |
WASILLA LAKE |
Event Type |
ACCIDENT |
Injury Severity |
MINOR |
Record Status |
FINAL |
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 |
UNKNOWN |
Cloud Height above Ground Level (ft) |
0 |
Ceiling Height above Ground Level (ft) |
5000 |
Cloud Type |
OVERCAST |
Visibility RVR (ft) |
0 |
Visibility RVV (sm) |
0 |
Visibility (sm) |
10 |
Wind Direction (deg) |
360 |
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 |
N9359E |
Aircraft Make |
AERONCA |
Aircraft Model |
11BC |
Aircraft Series |
NO SERIES EXISTS |
Aircraft Damage |
SUBSTANTIAL |
Aircraft Fire |
NONE |
Aircraft Explosion |
NONE |
Aircraft Type |
AIRPLANE |
Aircraft Homebuilt |
UNKNOWN |
Phase of Flight |
TAKEOFF |
Aircraft Use |
PERSONAL |
Flight Plan Filed |
NONE |
Operator Name |
|
Operator Doing Business As |
|
Owner Name |
DEAN P. EISBERG |
Number of Seats |
2 |
Number of Engines |
1 |
ELT Installed |
YES |
ELT Operated |
YES |
Departure Airport Id |
|
Departure City |
FIRE LAKE |
Departure State |
ALASKA |
Last Departure Point |
NO |
Destination Airport Id |
|
Destination City |
THREE MILE LAKE |
Destination State |
ALASKA |
Runway Id |
28 |
Runway Length |
6000 |
Runway Width |
0 |
Air Carrier Operating Certificates |
NO |
Air Carrier Other Operating Certificates |
UNKNOWN |
Rotocraft/Agriculture Operating Certificate |
UNKNOWN |
Cert Max Gross Wgt |
1350 |
ENGINE INFORMATION
Aircraft 1 - Engine : #1
Engine Manufactuer
| Continental |
Engine Model
| C-85 |
Engine Horsepower
| 85 |
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 |
1 |
0 |
Sequence of Events for Aircraft 1
Occurrence #1 LOSS OF ENGINE POWER (PARTIAL) - NON-MECHANICAL
Phase of Operation: TAKEOFF - INITIAL CLIMB
Events Sequence for Occurrence #1 of Aircraft 1
Event Seq # |
Event Group Code |
Subject |
Modifier |
Personnel |
Cause/Factor |
1 |
1 |
WEATHER CONDITION |
CARBURETOR ICING CONDITIONS |
|
FACTOR |
2 |
2 |
CARBURETOR HEAT |
NOT USED |
PILOT IN COMMAND |
CAUSE |
Occurrence #2 LOSS OF CONTROL - IN FLIGHT
Phase of Operation: TAKEOFF - INITIAL CLIMB
Events Sequence for Occurrence #2 of Aircraft 1
Event Seq # |
Event Group Code |
Subject |
Modifier |
Personnel |
Cause/Factor |
3 |
2 |
STALL |
INADVERTENT |
PILOT IN COMMAND |
CAUSE |
Occurrence #3 IN FLIGHT COLLISION WITH TERRAIN/WATER
Phase of Operation: DESCENT - UNCONTROLLED
Events Sequence for Occurrence #3 of Aircraft 1
Event Seq # |
Event Group Code |
Subject |
Modifier |
Personnel |
Cause/Factor |
4 |
1 |
TERRAIN CONDITION |
WATER |
|
|
AIRCRAFT 1 PRELIMINARY REPORT
On July 14, 2000, about 1930 Alaska daylight time, a float equipped Aeronca 11BC airplane, N9359E, sustained substantial damage to the left wing during a takeoff from Three Mile Lake, about 12 miles south of Wasilla, Alaska, at 61 degrees, 28 minutes north latitude, 149 degrees, 45 minutes west longitude. The personal flight was being conducted under Title 14, CFR Part 91, when the accident occurred. The solo airline transport pilot received minor injuries. Visual meteorological conditions prevailed, and no flight plan was filed. The flight originated from Fire Lake, Chugiak, Alaska, about 1900.
During a telephone conversation with the National Transportation Safety Board investigator-in-charge on July 14, witnesses reported the airplane had performed two landings prior to the accident. The witnesses described the airplane departing a third time, climbing just above the level of the trees, "doing a u-turn, and dropping straight down into the lake." The witnesses said they heard engine noise until the impact.
During a telephone conversation with the National Transportation Safety Board investigator-in-charge on July 17, the pilot said he took off on the long axis of the lake with a right crosswind. He said he turned the airplane left, the airplane's nose dropped, and the airplane impacted the water in a nose low, upright, attitude. The pilot wrote in NTSB Pilot/Operator Accident Report that the engine had a partial power loss, which may have been attributable to carburetor icing. He also stated there were no preaccident mechanical anomalies with the airplane, and that he did not use carburetor heat.
The ambient air temperature at the time of the accident was 56 degrees Fahrenheit; the dew point was 45 degrees Fahrenheit.
AIRCRAFT 1 FINAL REPORT
The pilot reported he took off on the long axis of the lake with a right crosswind. As he turned to the left, the airplane descended rapidly and struck the water in a nose low, upright, attitude. Witnesses reported the seaplane had performed two landings prior to the accident. They described the airplane departing a third time, climbing just above the level of the trees, doing a 'u-turn,' and dropping into the lake. They said they heard engine noise until impact. The pilot stated there were no preaccident mechanical anomalies with the airplane, but he did note a partial loss of engine power, which he indicated might have been caused by carburetor icing. He stated he did not use carburetor heat. The ambient air temperature was 56 degrees Fahrenheit, and the dew point was 45 degrees Fahrenheit.
AIRCRAFT 1 CAUSE REPORT
A loss of engine power due to the pilot's failure to use carburetor heat, and an inadvertent stall. A factor associated with the accident was the existence of carburetor icing conditions.
END REPORT