Bell 206L-3 N206AC
17 November 1999 · Seattle, Washington, United States · Minor injuries
Summary
On 17 November 1999 at about 20:10 local time, a Bell 206L-3 registered N206AC was involved in an accident near Seattle, Washington, United States. 3 people were on board and one had minor injuries. 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 20:10
- Classification
- Accident
- Location
- Seattle, Washington, United States
- Coordinates
- 47.6209, -122.3491
- Aircraft
- Bell 206L-3
- Registration
- N206AC
- Category
- Helicopter
- Engines
- 1
- Operator
- Not recorded
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Business
- Phase of flight
- Not recorded
- Route
- Seattle → Vancouver
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- SEA00FA021
People
1 person had minor injuries.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 3 | 0 | 0 | 1 | 2 |
Probable cause
Adequate separation and lookout not maintained by the pilots of both aircraft.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
The pilot of N5735A reported that he was transitioning the area of Lake Union (on a local electronic news gathering flight) in a south-southwesterly direction when the two aircraft collided. He stated that he simultaneously saw the other aircraft and felt the impact. After the collision, the pilot initiated a descent and landed on a nearby helipad. The pilot reported that prior to the collision he was monitoring the common traffic advisory frequency (CTAF) for Lake Union (122.90). He stated that just before transitioning the area he reported his position, altitude and heading on 122.90. The pilot of N206AC reported that he departed Boeing Field and was proceeding northbound. He stated that he had just cleared Boeing's Delta airspace and switched to Seattle Radio (122.50) when he '...experienced a loud bang and vibration in the main rotor system'. The pilot initiated a descent to a nearby helipad, and was able to land without further incident. The pilot stated he did not see the other aircraft before, or after the collision. There were no reported mechanical failures or malfunctions that may of contributed to the accident. A calculated convergence angle between the two aircraft indicated that there were no visual restrictions that would have prevented the pilot from seeing the other aircraft.
Quoted verbatim from the NTSB record.
Aircraft involved
| Aircraft | Registration | Operator | Damage |
|---|---|---|---|
| Bell 206L-3 206L-3 | N206AC | - | Substantial |
| Bell 206B 206B | N5735A | Kiro Inc. | Substantial |
Other Bell 206 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 10 Aug 1999 | Bell 206L | Cape Girardeau, Missouri, United States | - | No injuries | - |
| 13 Oct 1999 | Bell 206L-1 | Quetzaltenango, Guatemala | - | Fatal | 2 |
| 7 Oct 1999 | Bell 206B | Apache Junction, Arizona, United States | Arizona Heliservices Inc. | No injuries | - |
| 1 Nov 1999 | Bell 206B | Cottage Grove, Minnesota, United States | - | Fatal | 2 |
| 23 Oct 1999 | Bell 206-L4 | Santa Clarita, California, United States | - | No injuries | - |
| 9 Jun 1999 | Bell 206B | Juneau, Alaska, United States | ERA Aviation, Inc. | Minor injuries | - |
All 1,732 records for this type
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 16 Jan 1999 | Cessna 175 | Moses Lake, Washington, United States | John H. Bross | Serious injuries | - |
| 4 Dec 1999 | Cessna 140 | Port Townsend, Washington, United States | - | Minor injuries | - |
| 14 Jul 1999 | Cessna 185 | Renton, Washington, United States | - | No injuries | - |
| 10 Sep 1999 | Cessna 170B | Auburn, Washington, United States | - | No injuries | - |
| 26 Mar 1999 | Cessna T210L | Port Angeles, Washington, United States | Wings Aloft | Minor injuries | - |
| 11 Sep 1999 | Stinson V77 | Tacoma, Washington, United States | Kimble, Wallis, R. | No injuries | - |