Helio H-700 N4059H
13 August 1994 · Tok, Alaska, United States · No injuries
Summary
On 13 August 1994 at about 01:00 local time, a Helio H-700 registered N4059H, operated by 40 Mile Air, Ltd, was involved in an accident near Tok, Alaska, United States. 4 people were on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 01:00
- Classification
- Accident
- Location
- Tok, Alaska, United States
- Coordinates
- 63.1807, -143.1000
- Aircraft
- Helio H-700
- Registration
- N4059H
- Category
- Airplane
- Engines
- 1
- Operator
- 40 Mile Air, Ltd
- Operating rule
- Part 135: Air Taxi & Commuter
- Purpose of flight
- Unknown
- Phase of flight
- Not recorded
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- ANC94LA107
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 4 | 0 | 0 | 0 | 4 |
Probable cause
THE PARTIAL FAILURE OF THE AIRPLANE'S NORMAL BRAKE SYSTEM.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
AFTER LANDING ON THE GRAVEL BAR ON THE ROBERTSON RIVER, THE LEFT WHEEL'S BRAKE 'WENT SOFT.' THE PILOT ALLOWED THE AIRPLANE TO CONTINUE THE LANDING ROLL AND PRIOR TO STRIKING THE DITCH, HE INTENTIONALLY GROUND LOOPED THE AIRPLANE. DURING THE GROUND LOOP THE TAIL WHEEL STRUCK THE DITCH AND THE FUSELAGE BUCKLED. EXAMINATION OF THE AIRPLANE SHOWED THAT THE LEFT BRAKE'S TORQUE PLATE HAD SHEARED AND BROKEN THE BRAKE LINE.
Quoted verbatim from the NTSB record.
Other Helio H-700 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 6 Dec 1992 | Helio H-700 | Shelton, Connecticut, United States | William Blau | Fatal | 1 |
| 12 May 1984 | Helio H-700-SP | Meridian, Idaho, United States | - | No injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 10 Sep 1994 | Piper PA-18-150 | Gulkana, Alaska, United States | Maynard, Roger L. | No injuries | - |
| 8 Sep 1994 | Piper PA-12 | Nondalton, Alaska, United States | Alaska Safari, Inc. | No injuries | - |
| 13 Sep 1994 | Cessna 140 | Willow, Alaska, United States | Moore, Charles D. | No injuries | - |
| 15 Sep 1994 | Piper PA-18-150 | Port Alsworth, Alaska, United States | 4W Air | No injuries | - |
| 13 Sep 1994 | Piper PA-18 | Kodiak, Alaska, United States | Hulbert, Ward A. | No injuries | - |
| 19 Aug 1994 | Cessna 182B | Ketchikan, Alaska, United States | Charlton, Albert J. | No injuries | - |