Aircraft Accident/Incident Report

Whittier, Alaska 99693
Wednesday, March 6, 2002 12:00 AST

NTSB Narrative Summary Released at Completion of Accident

The pilot was practicing ridge top landings. He made his last approach perpendicular to the ridgeline. He said because he did not use a parallel approach to the ridge, and there were no wind indicators, he did not perceive an apparent wind shift. On final approach he turned parallel to the ridge, and made the landing with a tailwind. He was unable to arrest the high rate of descent, and forward airspeed, and landed hard on the ridge. The main rotor struck the tail boom, resulting in substantial damage to the tail boom.

NTSB Probable Cause Narrative

The pilot's Failure to maintain a proper descent rate during landing. Factors associated with the accident are variable wind conditions, and the pilot's improper approach to the landing site.

Event Information

Type of Event Accident
Event Date 3/6/2002
Event Day of the Week Wednesday
Time of Event 1200
Event Time Zone Atlantic Standard Time
Event City Whittier
Event State ALASKA
Event Country --
Zipcode of the event site 99693
Event Date Year 2002
Event Date Month 3
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 604638N
Event Location Longitude 1484317W
Event Location Airport --
Event Location Nearest Airport ID --
Indicates whether the acc/inc occurred off or on an airport --
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Partial - limited by pilot
Investigator's weather source Pilot
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
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) 50
Air Temperature at event time (in degrees celsius) -15
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 270
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 5
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 15
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) 4800
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 11794
NTSB Notification Source Pilot
NTSB Notification Date Mar 8 2002 12:00AM
NTSB Notification Time 1400
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jun 4 2002 9:52AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office Anchorage

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8316N
NTSB Number ANC02LA021
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Robinson
Aircraft Model R-22
Aircraft Series Identifier --
Aircraft Serial Number 2480
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 Annual
Date of Last Inspection Dec 21 2001 12:00AM
Airframe hours since last inspection 92.1
Airframe Hours 1142.2
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name ALPINE AIR INC
Aircraft Owner Street Address PO Box 1047
Aircraft Owner City Girdwood
Aircraft Owner State AK
Aircraft Owner Country USA
Aircraft Owner Zipcode 99587
Operator is an individual? No
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 YDAC
Owner has at least one certificate --
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
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) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code AQY
Departure City Girdwood
Departure State AK
Departure Country USA
Departure Time 1145
Departure Time Zone AST
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 Landing
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record May 1 2002 6:02PM
User who most recently changed record STAM
Since inspection or accident Time of Accident
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --