N1659E

Substantial
None

Aeronca 7AC S/N: 5225

Accident Details

Date
Tuesday, March 10, 1998
NTSB Number
LAX98LA111
Location
LONE PINE, CA
Event ID
20001211X09713
Coordinates
36.559875, -118.049674
Aircraft Damage
Substantial
Highest Injury
None
Fatalities
0
Serious Injuries
0
Minor Injuries
0
Uninjured
2
Total Aboard
2

Probable Cause and Findings

The failure of maintenance personnel to properly tighten the magneto clamps during installation of the engine on the aircraft following engine overhaul.

Aircraft Information

Registration
Make
AERONCA
Serial Number
5225
Engine Type
Reciprocating
Year Built
1946
Model / ICAO
7AC CH7A
Aircraft Type
Fixed Wing Single Engine
No. of Engines
1
Seats
2
FAA Model
7AC

Registered Owner (Current)

Name
BROWN FRANK A
Address
915 MARVISTA AVE
City
SEAL BEACH
State / Zip Code
CA 90740-5839
Country
United States

Analysis

On March 10, 1998, at 0900 hours Pacific standard time, an Aeronca 7AC, N1659E, collided with bushes and other obstacles during an off-airport forced landing near Lone Pine, California. The forced landing was precipitated by a loss of power as the aircraft was climbing to cruise altitude. The aircraft was owned and operated by the pilot and was on a personal cross-country flight. Visual meteorological conditions prevailed and no flight plan was filed. The aircraft incurred substantial damage. Neither the pilot nor the one passenger onboard were injured. The flight originated from the Lone Pine airport at 0830 as a cross-country flight to Fresno, California.

The pilot reported in his written statement that as the aircraft climbed through about 3,000 feet agl the engine began to misfire, then lost almost all power. Following an unsuccessful attempt to restore normal engine power, the pilot set up for a glide toward an abandoned airfield. With insufficient altitude to make the airfield, the pilot landed in a pasture and collided with bushes and hidden obstacles in the grass.

Both magnetos were found loose in their clamps by technicians from an aircraft recovery firm who retrieved the wreckage. Logbook review disclosed that the engine had accumulated 67 hours since a major overhaul, which was accomplished May 1, 1997. This was the last maintenance recorded in the logbooks.

Data Source

Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# LAX98LA111