Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Haines, Oregon 97833
Monday, April 26, 2004 16:00 PDT
NTSB Narrative Summary Released at Completion of Accident
The pilot was descending through about 100 feet above the ground at 60 knots airspeed on approach to landing when he heard a loud bang. He immediately transitioned into an autorotation but as he flared prior to touchdown he had insufficient rotor RPM and the helicopter landed hard with the main rotor blades severing the tailboom. The pilot reported that as the helicopter impacted the ground he noted the Rolls Royce (Allison) 250-C20B engine spooling up. He also stated that he did not hear any audible engine out alert during the entire sequence and that the helicopter was not equipped with an auto-relight system. A post-crash test run of the engine revealed no abnormalities. The height-velocity diagram for the helicopter indicated that a successful auto-rotation could be accomplished at an elevation of 100 feet for airspeeds of 41 knots and above.
NTSB Probable Cause Narrative
A momentary partial loss of power for undetermined reason(s) and the pilot's failure to maintain adequate RPM during his autorotation landing.
Event Information
| Type of Event | Accident |
| Event Date | 4/26/2004 |
| Event Day of the Week | Monday |
| Time of Event | 1600 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Haines |
| Event State | OREGON |
| Event Country | -- |
| Zipcode of the event site | 97833 |
| Event Date Year | 2004 |
| Event Date Month | 4 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 445227N |
| Event Location Longitude | 1175938W |
| Event Location Airport | -- |
| Event Location Nearest Airport ID | -- |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | -- |
| Weather Briefing Completeness | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1553 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 90 |
| Weather Observation Facility ID | BKE |
| Elevation of weather observation facility | 3373 |
| Distance of event from weather observation facility (units?) | 9 |
| Time Zone of the weather observation | PDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | Clear |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 25 |
| Dew Point at event time (in degress fahrenheit) | 4 |
| Wind Direction (degrees magnetic) | 80 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 7 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.26 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | Minor |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | 1 |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 17058 |
| NTSB Notification Source | SEA FAA ROC |
| NTSB Notification Date | Apr 27 2004 12:00AM |
| NTSB Notification Time | 1130 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Dec 28 2004 12:45PM |
| User who most recently changed record | NTSB\JOHB |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Boise FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N9785C |
| NTSB Number | SEA04LA073 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 137: Agricultural |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Hiller |
| Aircraft Model | UH-12E |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 2269 |
| Certified Max Gross Weight | 3150 |
| Aircraft Category | Helicopter |
| Aircraft Registration Class | U.S. Registered/U.S. Soil |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 3 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | 100 Hour |
| Date of Last Inspection | Feb 26 2004 12:00AM |
| Airframe hours since last inspection | 43 |
| Airframe Hours | 9152 |
| ELT Installed | No |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | Stevenson, Philip R. |
| Aircraft Owner Street Address | 14101 Launchpad Lane |
| Aircraft Owner City | Hainesd |
| Aircraft Owner State | OR |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 97833 |
| Operator is an individual? | No |
| Operator Name | -- |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 14101 Launchpad Land |
| Operator City | Haines |
| Operator State | OR |
| Operator Country | USA |
| Operator Zip code | 97833 |
| Operator Code | SD7G |
| Owner has at least one certificate | -- |
| Other Operator of large aircraft? | -- |
| Certified for Part 133 or 137 Operation | Agriculture |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | -- |
| Indicates Domestic or International Flight | -- |
| Operator carrying Pax/Cargo/Mail | -- |
| Type of Flying (Per_Bus / Primary) | Aerial Application |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | -- |
| Departure City | Elgin |
| Departure State | OR |
| Departure Country | USA |
| Departure Time | 1535 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | -- |
| Destination City | Haines |
| Destination State | OR |
| Destination Country | USA |
| Specific Phase of Flight | Approach |
| Report sent to ICAO? | No |
| Evacuation occurred | No |
| Date of most recent change to record | Oct 20 2004 11:33AM |
| User who most recently changed record | STAM |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | NA |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |