Bell 47G N61SD
11 August 1991 · Lake Ozark, Missouri, United States · No injuries
Summary
On 11 August 1991 at about 01:05 local time, a Bell 47G registered N61SD, operated by Central Wisconsin Helicopters, was involved in an accident near Lake Ozark, Missouri, United States. One person was 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 01:05
- Classification
- Accident
- Location
- Lake Ozark, Missouri, United States
- Coordinates
- 38.1798, -92.6191
- Aircraft
- Bell 47G
- Registration
- N61SD
- Category
- Helicopter
- Engines
- 1
- Operator
- Central Wisconsin Helicopters
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Business
- Phase of flight
- Not recorded
- Route
- Bagnell Dam → Unknown
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- CHI91LA257
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 1 | 0 | 0 | 0 | 1 |
Probable cause
FAILURE OF THE ROTORCRAFT'S TAIL BOOM IN FLIGHT. FACTORS RELATED TO THE ACCIDENT WERE REDUCED AIRCRAFT CONTROL AVAILABLE TO THE PILOT.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
THE PILOT SAID THAT SHORTLY AFTER TAKEOFF HE HEARD A LOUD SNAP, FOLLOWED BY AN UNCOMMANDED RIGHT YAW. AN EMERGENCY AUTOROTATION WAS EXECUTED WHICH RESULTED IN A HARD WATER LANDING. POST ACCIDENT INVESTIGATION REVEALED THE CHROMEMOLY TUBING HAD FAILED IN FRONT OF THE TAIL ROTOR YOKE, IN FLIGHT.
Quoted verbatim from the NTSB record.
Other Bell 47 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 28 Oct 1991 | Bell 47D-1 | Rome, Georgia, United States | Silver Hawk Aviation | No injuries | - |
| 26 Sep 1991 | Bell 47G-5A | Pearsall, Texas, United States | Tiller Helicopter Service, Inc | Minor injuries | - |
| 19 May 1991 | Bell 47G-3B-1 | Malott, Washington, United States | Cascade Helicopter | No injuries | - |
| 20 Aug 1991 | Bell 47G | Kettleman City, California, United States | Shafter Aviation, Inc. | Minor injuries | - |
| 10 Sep 1991 | Bell 47G-3B-2 | Chula Vista, California, United States | K & L Helicopters | Minor injuries | - |
| 15 May 1991 | Bell 47-G3B1 | Hughesville, Pennsylvania, United States | Agricultural Helicopter Serv. | Serious injuries | - |
All 1,633 records for this type
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 1 Jun 1991 | Gremminger KOLB TWINSTAR | St. Genevieve, Missouri, United States | Greg W. Gremminger | Serious injuries | - |
| 13 Aug 1991 | Manville AVID FLYER | Mexico, Missouri, United States | George Manville | Minor injuries | - |
| 10 Sep 1991 | Schweizer G164B | Gideon, Missouri, United States | Wilkens Flying Service | No injuries | - |
| 4 Apr 1991 | Akins STINGER | Blairstown, Missouri, United States | Richard Akins | Fatal | 1 |
| 17 Apr 1991 | Huff PULSAR | Missouri City, Missouri, United States | Glenn E. Huff | Serious injuries | - |
| 2 Oct 1991 | Cessna 150L | Taylor, Missouri, United States | Haerr Field, Inc. | Minor injuries | - |