Aeronca 7AC accident near Semmes, Alabama, September 17, 1989
On September 17, 1989 at about 11:05 pm local time, a Aeronca 7AC, registered N83732, was substantially damaged in an accident near Semmes, Alabama (Grimes Field). 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
IMPROPER REPLACEMENT OF THE FUEL CAP GASKET BY THE PILOT, WHICH RESULTED IN A BLOCKED FUEL CAP VENT AND FUEL STARVATION. TREES IN THE EMERGENCY LANDING AREA CONTRIBUTED TO AIRCRAFT DAMAGE.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- September 17, 1989 · about 11:05 pm local time
- Place
- Semmes, Alabama · Grimes Field · 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
- N83732 · registry record · serial 7AC-2410
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
AFTER AN ANNUAL INSPECTION WAS COMPLETED, THE PILOT ELECTED TO REPLACE A FUEL CAP GASKET THAT HE HAD PREVIOUSLY ORDERED. DURING THE REPLACEMENT, HE NOTICED THAT THE NEW GASKET WAS NOT EXACTLY LIKE THE ORIGINAL, BUT HE THOUGHT IT WOULD BE SATISFACTORY. HE THEN REFUELED THE AIRCRAFT AND MADE SEVERAL TAKEOFFS AND LANDINGS. AFTER ABOUT A 30 MINUTE FLIGHT, A PASSENGER BOARDED THE AIRCRAFT AND THE PILOT TOOK OFF AGAIN. DURING THE INITIAL CLIMB AFTER TAKEOFF, THE ENGINE LOST POWER. THE PILOT MADE AN EMERGENCY LANDING, BUT WAS UNABLE TO STOP THE AIRCRAFT BEFORE IT HIT TREES. AFTER THE ACCIDENT, THE PILOT DISCOVERED THAT THE FUEL CAP VENT HAD BECOME BLOCKED BY THE NEW GASKET. ALSO, HE NOTED THAT DURING THE LANDING SEQUENCE, THE FUEL CAP WAS DISLODGED ENOUGH TO ALLOW AIR BACK IN THE TANK AND THE ENGINE BEGAN RUNNING AGAIN.
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: private
- Ratings: single-engine land
- Flight time: 267 hours in all; 3 in this make and model; 9 in the last 90 days; 9 in the last 30 days; 195 as pilot in command
- Medical certificate: Class 3 (valid medical--no waivers/lim.)
- Seat: frt
The aircraft
- Airframe total time: 5,368 hours
- Last inspection: annual inspection, September 17, 1989; 25 hours since
- Maximum gross weight: 1,300 lb
- Seats: 2
- Landing gear: fixed
- Engine: Continental C-90-8F (piston); 0 hours total
The flight
- Flight plan: none
- Runway 5, 1,800 ft by 100 ft
Weather at the time
- Light: daylight
- Wind: from 320° at 5 knots
- Visibility: 17 statute miles
- Sky: clear
- Temperature: 75°F (24°C), dew point 0°F (-18°C)
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.
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.