Cessna 210 accident near Florence, South Carolina, April 3, 1992
On April 3, 1992 at about 10:43 pm local time, a Cessna 210, registered N7320E, was substantially damaged in an accident near Florence, South Carolina. It was a personal flight under general aviation rules (Part 91). No one was hurt; 4 people were on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
THE IMPROPER INSTALLATION OF THE ENGINE COUNTERWEIGHT RETENTION RINGS WHICH RESULTED IN THE SEPARATION OF THE RETENTION PIN, ALLOWING THE LEADING EDGE OF THE COUNTERWEIGHT TO STRIKE THE CRANKCASE. FACTORS IN THE ACCIDENT WERE THE SUBSEQENT LOSS OF POWER AND THE SOFT FIELD.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- April 3, 1992 · about 10:43 pm local time
- Place
- Florence, South Carolina · map
- Type
- Accident
- Injuries
- No one was hurt; 4 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Cessna 210 · all 210s on the register
- Registration
- N7320E · no longer on the register · serial 57020
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
WHILE CRUISING AT 5000 FEET MSL, THE PILOT EXPERIENCED A COMPLETE LOSS OF ENGINE POWER. THE PILOT ESTABLISHED AN EMERGENCY DESCENT FOR A FORCED LANDING IN A NEARBY FIELD. UPON TOUCHDOWN, THE NOSE WHEEL DUG INTO THE PLOWED FIELD AND THE AIRPLANE NOSED OVER. THE ENGINE EXAMINATION DISCLOSED THAT THE NO. 3 AND NO. 4 CONNECTING RODS WERE BROKEN AND THERE WAS A HOLE IN THE ENGINE CRANKCASE ADJACENT TO THE #4 CYLINDER. THE ENGINE TEARDOWN REVEALED THAT 2 COUNTERWEIGHT RETENTION RINGS HAD BEEN DISLODGED FROM THEIR NORMALLY INSTALLED POSITIONS. THE EXAMINATION ALSO REVEALED THAT THE RETENTION RINGS WERE INSTALLED WITH THE BEVELLED SIDE OF THE RING OUTBOARD AND THE FLAT SIDE INBOARD. ACCORDING TO THE ENGINE OVERHAUL MANUAL, THE FLAT SIDE OF THE RETENTION RINGS SHOULD BE INSTALLED OUTBOARD. THE REMAINING RETENTION RINGS WERE INSTALLED PROPERLY. HISTORICAL MAINTENANCE INFORMATION ON THE COUNTERWEIGHT WAS NOT RECOVERED.
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: 150 hours in all; 33 in this make and model; 5 in the last 30 days
- Medical certificate: Class 3 (valid medical--no waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 2,800 hours
- Last inspection: annual inspection, November 8, 1991; 10 hours since
- Maximum gross weight: 2,900 lb
- Seats: 4
- Landing gear: fixed
- Engine: Continental IO-470-E (piston); 0 hours total
The flight
- Destination: JAX Jacksonville FL
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 240° at 10 knots
- Visibility: 10 statute miles
- Sky: scat at 15,000 ft
- Temperature: 52°F (11°C), dew point 0°F (-18°C)
- Altimeter: 29.00 inHg
- Observation at 10:53 pm from FLO, 1 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 3 |
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.