| Date: | Friday 27 June 1986 |
| Time: | 05:45 |
| Type: | Martin 4-0-4 |
| Owner/operator: | Frontier Airways |
| Registration: | N40443 |
| MSN: | 14228 |
| Year of manufacture: | 1952 |
| Engine model: | Pratt & Whitney R-2800-CB |
| Fatalities: | Fatalities: 3 / Occupants: 3 |
| Other fatalities: | 0 |
| Aircraft damage: | Destroyed, written off |
| Category: | Accident |
| Location: | Buffalo Municipal Airport, WY (BYG) -
United States of America
|
| Phase: | Take off |
| Nature: | Agricultural |
| Departure airport: | Buffalo Municipal Airport, WY (BYG/KBYG) |
| Destination airport: | Buffalo Municipal Airport, WY (BYG/KBYG) |
| Confidence Rating: | Accident investigation report completed and information captured |
Narrative:The Martin, loaded with 600gal of pesticide settled back on the runway after a long takeoff run. The aircraft struck a 12 feet high dirt mound, flipped inverted and caught fire. It was determined that the pilot held a private certificate with ASMEL ratings and his medical certificate was denied. The co-pilot held a commercial certificate with ASEL rating, but none of the pilots appeared to have any operating experience on the Martin 4-0-4. The weight of the aircraft on takeoff was calculated to be 44,492 pounds, while the maximum gross total weight for a 4500 feet runway 'dry' takeoff was approx. 37,900 pounds.
PROBABLE CAUSE:
- Inadequate certification/approval - Op'n/operator..Company/operator mgmt
- Aircraft performance,takeoff capability..Exceeded
- Aircraft weight and balance..Exceeded..Pilot in command
- Airspeed(Vlof)..Not attained..Pilot in command
- Proper climb rate..Not possible..Pilot in command
- Remedial action..Not possible..Pilot in command
Contributing Factors:
- Fluid,ADI fluid..Inoperative
- Preflight planning/preparation..Poor..Pilot in command
- Lack of total experience in kind of aircraft..Pilot in command
- Lack of recent experience in type of aircraft..Pilot in command
- Lack of total experience..Copilot/second pilot
Sources:
NTSB
Location
Images:

photo (c) via Werner Fischdick; Macon Airport, GA (MCN); March 1975
Revision history:
| Date/time | Contributor | Updates |