Cessna 206 and Cessna 310R accident near Frederick, Maryland, June 23, 1991
On June 23, 1991 at about 4:30 pm local time, 2 aircraft, Cessna 206 (N734LN) and Cessna 310R (N8631G), were involved in the same accident near Frederick, Maryland (Frederick Muni airport). No one was hurt; 2 people were on board or involved. The weather was visual conditions (good weather).
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The NTSB's probable cause their words, unchanged
THE PILOT MISJUDGED AND FAILED TO MAINTAIN ADEQUATE CLEARANCE WITH A PARKED AIRCRAFT.
THE PILOT OF THE OTHER AIRCRAFT FAILED TO MAINTAIN ADEQUATE CLEARANCE WITH A PARKED AIRCRAFT.
Source: NTSB aviation accident database, copy made September 29, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- June 23, 1991 · about 4:30 pm local time
- Place
- Frederick, Maryland · Frederick Muni · map
- Type
- Accident · collision on the ground
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft 1
- Cessna 206 · all 206s on the register
- Registration
- N734LN · registry record · serial V20604849
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
- Aircraft 2
- Cessna 310R · all 310Rs on the register
- Registration
- N8631G · no longer on the register · serial 2074245
- Damage
- Minor damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative for the Cessna 206 final · quoted from the NTSB record
THE CESSNA 206 PILOT WAS ATTEMPTING TO PASS IN FRONT OF THE CESSNA 310 THAT WAS PARKED OFF THE SIDE OF THE TAXIWAY. THE CESSNA 310 WAS PARKED PERPENDICULAR TO THE TAXIWAY AND THE ENGINES WERE OPERATING. THE FRONT OF THE CESSNA 310 WAS PARTIALLY OVER THE TAXIWAY. THE CESSNA 206 RIGHT WING STRUCK THE LEFT PROPELLER, SEVERING A SECTION OF THE WING.
The NTSB's narratives can run to many pages; this is the opening. Read the full report at the NTSB.
The NTSB's narrative for the Cessna 310R final · quoted from the NTSB record
THE CESSNA 206 PILOT WAS ATTEMPTING TO PASS IN FRONT OF THE CESSNA 310 THAT WAS PARKED OFF THE SIDE OF THE TAXIWAY. THE CESSNA 310 WAS PARKED PERPENDICULAR TO THE TAXIWAY AND THE ENGINES WERE OPERATING. THE FRONT OF THE CESSNA 310 WAS PARTIALLY OVER THE TAXIWAY. THE CESSNA 206 RIGHT WING STRUCK THE LEFT PROPELLER, SEVERING A SECTION OF THE WING.
The NTSB's narratives can run to many pages; this is the opening. Read the full report at the NTSB.
About this page
Everything above comes from the NTSB's public accident database and is rewritten in plain English only where the NTSB used codes; the probable cause and narrative are the NTSB's own words. This site never names pilots, passengers or anyone else involved. A preliminary report describes what is known soon after the event and can change; the final report, with the probable cause, usually follows one to two years later and this page is refreshed when it does. Case number BFO91LA056.