Aeronca 7AC accident near Lone Pine, California, March 10, 1998
On March 10, 1998 at about 5:00 pm local time, a Aeronca 7AC, registered N1659E, was substantially damaged in an accident near Lone Pine, California. It was a personal flight under general aviation rules (Part 91). No one was hurt; 2 people were on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The failure of maintenance personnel to properly tighten the magneto clamps during installation of the engine on the aircraft following engine overhaul.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- March 10, 1998 · about 5:00 pm local time
- Place
- Lone Pine, California · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Aeronca 7AC · all 7ACs on the register
- Registration
- N1659E · registry record · serial 5225
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The pilot reported 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.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
Pilot
- Certificate: commercial pilot
- Ratings: single-engine land; instrument: airplane
- Flight time: 350 hours in all; 85 in this make and model
- Medical certificate: Class 2 (valid medical--no waivers/lim.)
- Seat: frt
The aircraft
- Last inspection: annual inspection, May 1, 1997; 67 hours since
- Maximum gross weight: 1,220 lb
- Seats: 2
- Landing gear: fixed
- Engine: Continental C-90-8F (piston); 0 hours total
The flight
- Departed from: O26 at 4:30 pm
- Destination: FCH Fresno CA
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 55°F (13°C), dew point 16°F (-9°C)
- Altimeter: 30.00 inHg
- Observation at 4:56 pm from BIH, 46 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 1 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.
Other NTSB records under N1659E the same tail number, which may have belonged to a different aircraft at the time
Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.