Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Harpswell, Maine 04079
Tuesady, July 11, 2000 10:05 EDT
NTSB Narrative Summary Released at Completion of Accident
The pilot was traveling forward in a Robinson R22B at an airspeed of 10 to 20 knots, and an altitude of 230 feet above the ground, with a 15 to 21 knot left-quartering tailwind. The helicopter began to rotate to the right. After three rotations the pilot was unable to recover, and the helicopter impacted terrain. FAA Advisory Circular (AC) 90-95 stated that loss of tailrotor effectiveness (LTE) was a critical, low-speed aerodynamic flight characteristic which could result in an uncommanded rapid yaw rate, and loss of aircraft control. It also stated that all single main rotor helicopters were susceptible to loss of tail rotor effectiveness (LTE). The AC advised pilots that when maneuvering between hover and 30 knots to avoid: left crosswinds, tailwinds, and high power settings at low airspeeds.
NTSB Probable Cause Narrative
The pilot-in-command's improper in-flight decision to maneuver at a low airspeed with a left-quartering tailwind which resulted in a loss of tailrotor effectiveness.
Event Information
| Type of Event | Accident |
| Event Date | 7/11/2000 |
| Event Day of the Week | Tuesday |
| Time of Event | 1005 |
| Event Time Zone | Eastern Daylight Time |
| Event City | HARPSWELL |
| Event State | MAINE |
| Event Country | -- |
| Zipcode of the event site | 04079 |
| Event Date Year | 2000 |
| Event Date Month | 7 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | -- |
| Event Location Longitude | -- |
| 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 | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 955 Eastern Daylight Time |
| Direction of event from weather observation facility (degrees) | 10 |
| Weather Observation Facility ID | NHZ |
| Elevation of weather observation facility | 75 |
| Distance of event from weather observation facility (units?) | 7 |
| Time Zone of the weather observation | EDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 0 |
| Lowest Non-Ceiling Height | 3000 |
| Sky/Lowest/Cloud Conditions | Scattered |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 7 |
| Air Temperature at event time (in degrees celsius) | 21 |
| Dew Point at event time (in degress fahrenheit) | 1 |
| Wind Direction (degrees magnetic) | 300 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 15 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 21 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Serious |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 1 |
| Injury Total Serious | 1 |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 415 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | Jul 11 2000 12:00AM |
| NTSB Notification Time | 1200 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Mar 4 2001 7:09AM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N2365S |
| NTSB Number | NYC00LA191 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Robinson |
| Aircraft Model | R-22B |
| Aircraft Series Identifier | R-22B |
| Aircraft Serial Number | 0527 |
| Certified Max Gross Weight | 1370 |
| 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 | 2 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Unknown |
| Date of Last Inspection | -- |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | No |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | DENIS O. GAGNON |
| Aircraft Owner Street Address | MOUNTAIN ROAD |
| Aircraft Owner City | HARSPSWELL |
| Aircraft Owner State | ME |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 04079 |
| Operator is an individual? | -- |
| Operator Name | |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | |
| Operator City | |
| Operator State | |
| Operator Country | |
| Operator Zip code | |
| Operator Code | |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | Unknown |
| 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) | Unknown |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | NONE |
| Departure City | SOUTH HARPSWELL |
| Departure State | ME |
| Departure Country | |
| Departure Time | 930 |
| Departure Time Zone | EDT |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | |
| Destination City | |
| Destination State | |
| Destination Country | |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Mar 4 2001 7:09AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 0 |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |