Hughes 369D N1089Y
22 June 1999 · Shelton, Washington, United States · No injuries
Summary
On 22 June 1999 at about 21:30 local time, a Hughes 369D registered N1089Y was involved in an accident near Shelton, Washington, 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 21:30
- Classification
- Accident
- Location
- Shelton, Washington, United States
- Nearest airport
- Sanderson Field (SHN)
- Coordinates
- Not recorded
- Aircraft
- Hughes 369D
- Registration
- N1089Y
- Category
- Helicopter
- Engines
- 1
- Operator
- Not recorded
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Business
- Phase of flight
- Not recorded
- Route
- Rockaway → Unknown
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- SEA99LA092
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 1 | 0 | 0 | 0 | 1 |
Probable cause
The pilot's failure to maintain rotor RPM during an autorotation.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
The pilot was practicing autorotations from an altitude of approximately 200 feet above ground level (AGL) and an airspeed of approximately 50 knots. During the second practice autorotation, the pilot reduced power with throttle and used collective to adjust rotor speed to 410 RPM (minimum RPM for practice autorotations). The rotor RPM decreased below 410 RPM and the aircraft rapidly started to descend. Before the pilot was able to recover, the aircraft collided with the ground and rolled over. The aircraft sustained substantial damage to the main rotor blades, tail rotor, tail boom and fuselage. The pilot reported no mechanical failures or malfunctions with the aircraft at the time of the accident.
Quoted verbatim from the NTSB record.
Other Hughes 369 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 7 Jun 1999 | Hughes 369HS | Pacific Ocean | - | Minor injuries | - |
| 31 Jul 1999 | Hughes 369D | Petersburg, Alaska, United States | - | No injuries | - |
| 30 Dec 1999 | Hughes 369HS | Pacific Ocean | Hansen Helicopters | No injuries | - |
| 8 Jun 1999 | Hughes 369D | Southbend, Washington, United States | - | Minor injuries | - |
| 16 Feb 1999 | Hughes 369D | Baggs, Wyoming, United States | - | Serious injuries | - |
| 20 May 1999 | Hughes 369E | Intercession, Florida, United States | Air 2 | Fatal | 1 |
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 | - |