Artic S-1B2 N59AT
31 July 1993 · Johnson Glacier, Alaska, United States · Fatal
Summary
On 31 July 1993 at about 08:00 local time, a Artic S-1B2 registered N59AT, operated by Flotre, Bert A., was involved in an accident near Johnson Glacier, Alaska, United States. 2 people were on board and 2 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 08:00
- Classification
- Accident
- Location
- Johnson Glacier, Alaska, United States
- Coordinates
- 63.7007, -144.8903
- Aircraft
- Artic S-1B2
- Registration
- N59AT
- Category
- Airplane
- Engines
- 1
- Operator
- Flotre, Bert A.
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Business
- Phase of flight
- Not recorded
- Route
- Anchorage → Paxton
- Aircraft damage
- Destroyed
- Weather
- VMC
- Light
- Day
- NTSB number
- ANC93LA143
People
2 people died.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 2 | 2 | 0 | 0 | 0 |
Probable cause
THE PILOT'S ATTEMPTED FLIGHT IN AN AIRPLANE WHICH EXCEEDED THE MAXIMUM ALLOWABLE WEIGHT. THE HIGH MOUNTAINOUS TERRAIN WAS A FACTOR.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
BOTH OCCUPANTS WERE CERTIFIED ALASKA GUIDES. ON-SCENE EVIDENCE SHOWED THAT THE AIRPLANE IMPACTED MOUNTAINOUS TERRAIN AT A STEEP ANGLE WHILE ROTATING TO THE LEFT. THE AIRPLANE HAD AN FAA-APPROVED FACTORY AUXILIARY 32-GAL BELLY FUEL TANK INSTALLED; NO WEIGHT & BALANCE REVISION WAS FOUND IN THE AIRPLANE'S RECORDS. AIRPLANE'S WEIGHT AT TIME OF ACCIDENT OVER 20% GREATER THAN MAX ALLOWABLE. NO FLIGHT TEST/PERFORMANCE DATA AVAILABLE FOR AIRPLANE WITH AUX TANK INSTALLED. IN ADDITION, THE AIRPLANE WAS EQUIPPED WITH TUNDRA TIRES; NO STC WAS RECORDED, NOR WAS CERTIFICATION FLIGHT TEST EVER CONDUCTED TO DETERMINE CG ENVELOPE WITH TUNDRA TIRES INSTALLED. AIRPLANE RECOVERED 8/12/93.
Quoted verbatim from the NTSB record.
Other Artic S-1B2 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 18 Sep 1994 | Artic S-1B2 | Wasilla, Alaska, United States | Coleman, Edward A. | Serious injuries | - |
| 21 Dec 1991 | Artic S-1B2 | Lysite, Wyoming, United States | Sky Aviation Corporation | Minor injuries | - |
| 6 Dec 1997 | Artic S-1B2 | Worland, Wyoming, United States | - | No injuries | - |
| 10 Aug 1988 | Artic S-1B2 | Kotzebue, Alaska, United States | - | Fatal | 2 |
| 24 Aug 1988 | Artic S-1B2 | Hartman River, Alaska, United States | Mangiardi, Eugene J. | No injuries | - |
| 20 May 1999 | Artic S-1B2 | Lamar, Colorado, United States | Charles T. Mallard | No injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 21 Jul 1993 | Cessna A185F | Denali Nat'l Pk, Alaska, United States | James Okonek | Serious injuries | - |
| 4 Aug 1993 | Piper PA-32R-300 | Atigun Pass, Alaska, United States | Yutana Airlines | Fatal | 1 |
| 19 Aug 1993 | De Havilland DHC-3 | Nikabuna Lake, Alaska, United States | Ketchum Air Service Inc. | Minor injuries | - |
| 31 Aug 1993 | De Havilland DHC-2 | Iliamna, Alaska, United States | Rainbow King, Inc | Fatal | 3 |
| 2 Sep 1993 | Piper PA-18A-150 | Sanona Creek, Alaska, United States | Garfield, Wade E. | Fatal | 2 |
| 8 Sep 1993 | Interstate S-1B2 ARCTIC TERN | Talkeetna River, Alaska, United States | Franklin, Gary L. | Serious injuries | - |