Upton MUSTANG M-II N4YP
5 December 1993 · Guthrie, Oklahoma, United States · Fatal
Summary
On 5 December 1993 at about 16:40 local time, a Upton MUSTANG M-II registered N4YP was involved in an accident near Guthrie, Oklahoma, United States. One person was on board and one died. The aircraft was destroyed. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 16:40
- Classification
- Accident
- Location
- Guthrie, Oklahoma, United States
- Coordinates
- 35.8404, -97.4206
- Aircraft
- Upton MUSTANG M-II
- Registration
- N4YP
- Category
- Airplane
- Engines
- 1
- Operator
- Not recorded
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Personal
- Phase of flight
- Not recorded
- Route
- Oklahoma City → Unknown
- Aircraft damage
- Destroyed
- Weather
- VMC
- Light
- Day
- NTSB number
- FTW94FA044
People
1 person died.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 1 | 1 | 0 | 0 | 0 |
Probable cause
WAS THE IN FLIGHT FAILURE OF THE LEFT AILERON FOR REASONS UNDETERMINED.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
A WITNESS HEARD A LOUD NOISE AND OBSERVED THE AIRPLANE DIVING TOWARDS THE GROUND. BOTH WINGS AND THE LEFT WING TIP, LEFT ELEVATOR, AND LEFT AILERON WERE LOCATED 1, 2, AND 3 MILES SOUTH OF THE MAIN BODY OF WRECKAGE, RESPECTIVELY. THE RIGHT SIDE OF THE WING CARRY-THROUGH SPAR WAS BENT DOWN AND TWISTED AFT AT THE FRACTURE POINT. THE LEADING EDGE OF THE AILERON AND THE OUTBOARD PORTION OF THE ELEVATOR LEADING EDGE WERE TORN AT THE RIVET LINE. THE AILERON SKIN WAS FLATTENED. THE AILERON COUNTERWEIGHTS WERE NOT RECOVERED. THE AIRPLANE DESIGNER AND KIT MANUFACTURER CAUTIONED OWNER/BUILDERS TO REPLACE THE AILERON COUNTERWEIGHT POP RIVETS WITH A STRONGER TYPE OF RIVET. MAINTENANCE RECORDS DID NOT DISCLOSE WHETHER THIS HAD BEEN ACCOMPLISHED.
Quoted verbatim from the NTSB record.
Other Upton MUSTANG accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 14 Jun 1994 | Upton MUSTANG II | Churchtown, Ohio, United States | - | Fatal | 2 |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 11 Oct 1993 | Emmert TIERRA II | Yukon, Oklahoma, United States | Emmert, Raymond L. | Serious injuries | - |
| 10 Feb 1993 | Swearingen SA-26AT | Ardmore, Oklahoma, United States | Heth, James B. | No injuries | - |
| 23 Feb 1993 | Bell 206B | Oklahoma City, Oklahoma, United States | Jonhnson, James P. | Minor injuries | - |
| 7 Mar 1993 | Cessna 177 | Overbrook, Oklahoma, United States | O'neal, Richard M. | No injuries | - |
| 15 Mar 1993 | Cessna 172M | Overbrook, Oklahoma, United States | Menagerie Enterprises | No injuries | - |
| 26 Mar 1993 | Cessna 182 | Washington, Oklahoma, United States | Paradise Skydivers | No injuries | - |