Bell 206B N83139
25 August 1992 · Fairbanks, Alaska, United States · No injuries
Summary
On 25 August 1992 at about 17:43 local time, a Bell 206B registered N83139, operated by Alaska Public Safety, was involved in an accident near Fairbanks, Alaska, United States. 2 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 17:43
- Classification
- Accident
- Location
- Fairbanks, Alaska, United States
- Nearest airport
- Fairbanks (FAI)
- Coordinates
- 64.6698, -147.0396
- Aircraft
- Bell 206B
- Registration
- N83139
- Category
- Helicopter
- Engines
- 1
- Operator
- Alaska Public Safety
- Operating rule
- Public Use
- Purpose of flight
- Public Use
- Phase of flight
- Not recorded
- Route
- Unknown → Tok
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- ANC92GA155
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 2 | 0 | 0 | 0 | 2 |
Probable cause
POOR MAINTENANCE AND INSPECTION PROCEDURES BY THE CONTRACT MAINTENANCE PERSONNEL, AS WELL AS IMPROPER MAINTENANCE AND INSTALLATION OF THE FUEL LINE BY THE CONTRACT MAINTENANCE PERSONNEL. FACTORS RELATING TO THE ACCIDENT WERE THE TURBOSHAFT ENGINE VIBRATIONS AND THE CRACKED FUEL LINE(S).
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
THE STATE OF ALASKA HELICOPTER EXPERIENCED A FUEL LEAK AND AN UNEVENTFUL PRECAUTIONARY LANDING. THE LEAKING FUEL LINE WAS REPLACED IN FIELD MAINTENANCE WITHOUT MANUFACTURER'S REQUIRED SECURING CLAMPS. A SECOND FUEL LEAK, PRECAUTIONARY LANDING AND FUEL LINE REPLACEMENT WAS EFFECTED, AGAIN WITHOUT CLAMPS. A THIRD FUEL LEAK AT THE SAME REPLACEMENT LINE WAS FOLLOWED BY A FIRE FOLLOWING A PRECUATIONARY LANDING. THE NTSB SUPERVISED MANUFACTURER'S ENGINE EXAMINATION REVEALED VIBRATION IN ROTATING COMPONENTS OF 15 TIMES THE ALLOWED LIMITS, AS WELL AS A FATIGUE CRACK IN THE HOT SECTION. THESE VIBRATIONS AND CRACKS WERE NOT DISCOVERED DURING ENGINE MAINTENANCE AND INSPECTIONS BY COMPANY CONTRACT MAINTENANCE PERSONNEL. THE METALLURGICAL EXAMINATION OF THE FUEL LINES IN EACH EVENT REVEALED FATIGUE PROPAGATION AND THE LACK OF CLAMP MARKS ON THE FUEL LINES FROM EVENTS 2 AND 3.
Quoted verbatim from the NTSB record.
Other Bell 206 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 29 Jan 1992 | Bell 206L-3 | E.i. Blk 108 | Industrial Helicopters Inc. | Minor injuries | - |
| 2 Mar 1992 | Bell 206BIII | Glenbrook, Nevada, United States | Smith Helicopter, Inc. | No injuries | - |
| 15 Feb 1992 | Bell 206L-3 | South Pelto #1 | Petroleum Helicoters, Inc. | No injuries | - |
| 26 Feb 1992 | Bell 206B III | Grand Isle | Chevron USA Incorporated | No injuries | - |
| 1 Apr 1992 | Bell 206BIII | Kaaawa, Hawaii, United States | Hawaii Intl Helicopters | No injuries | - |
| 21 Nov 1992 | Bell 206B-III | Hilo, Hawaii, United States | Paramount Pictures | Minor injuries | - |
All 1,732 records for this type
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 13 Feb 1992 | Piper PA-18A-150 | Anchorage, Alaska, United States | John Clark | Minor injuries | - |
| 12 Feb 1992 | Richard C Ballow KITFOX 1 | Valdez, Alaska, United States | Jones, William Marshall | No injuries | - |
| 17 Feb 1992 | Aeronca 7AC | Sitka, Alaska, United States | Diment, Archie G. | No injuries | - |
| 9 Oct 1992 | Champion 7EC | Chugiak, Alaska, United States | - | Fatal | 1 |
| 14 Feb 1992 | Cessna 180 | Shishmaref, Alaska, United States | Sheldon, Robert J. | Serious injuries | - |
| 19 Feb 1992 | Cessna 185F | Pelican, Alaska, United States | Bellair, Inc. | Minor injuries | - |