Individually Owned: 150,657
Corporate Owned: 137,281
Flagstaff Pulliam Airport
Aircraft Accident/Incident Report
Flagstaff, Arizona 86004
Saturday, January 18, 1997 12:20 MST
NTSB Narrative Summary Released at Completion of Accident
During a certification test flight, the pilot was following test card procedures to establish parameters for a height-velocity diagram. He began an autorotation, using a 1-second delay (to simulate pilot reaction time) before lowering the collective. As the autorotation progressed, the helicopter developed a rate of descent that the pilot was unable to check. Subsequently, the helicopter touched down hard, the skids collapsed, and the tailboom was severed by the main rotor blades. The helicopter slid off the runway into snow and rolled onto its right side. Circumstances identified in this accident had been identified during previous investigations of flight test accidents with this helicopter, but that information had not been provided to this test pilot and flight test engineer.
NTSB Probable Cause Narrative
failure of the manufacturer to follow its directive to develop corrective measures in response to known accident data, and their failure to ensure that pertinent information (in engineering department) was communicated to the test pilot and flight test engineer (in flight test).
Event Information
| Type of Event | Accident |
| Event Date | 1/18/1997 |
| Event Day of the Week | Saturday |
| Time of Event | 1220 |
| Event Time Zone | Mountain Standard Time |
| Event City | FLAGSTAFF |
| Event State | ARIZONA |
| Event Country | -- |
| Zipcode of the event site | 86004 |
| Event Date Year | 1997 |
| Event Date Month | 1 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | FLAGSTAFF PULLIAM |
| Event Location Nearest Airport ID | FLG |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | 7011 |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1235 Mountain Standard Time |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | FLG |
| Elevation of weather observation facility | 7011 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | MST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 0 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Clear |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 3 |
| Dew Point at event time (in degress fahrenheit) | -9 |
| Wind Direction (degrees magnetic) | 50 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 5 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 30 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | None |
| 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 | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 1078 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Jan 18 1997 12:00AM |
| NTSB Notification Time | 1142 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Dec 8 2000 12:05PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N9202L |
| NTSB Number | LAX97FA091 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | McDonnell Douglas |
| Aircraft Model | MD600N |
| Aircraft Series Identifier | MD600N |
| Aircraft Serial Number | RN002 |
| Certified Max Gross Weight | 4100 |
| 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 | 1 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | 100 Hour |
| Date of Last Inspection | Jan 10 1997 12:00AM |
| Airframe hours since last inspection | 14 |
| Airframe Hours | 112 |
| ELT Installed | Unknown |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | MCDONNELL DOUGLAS |
| Aircraft Owner Street Address | 5000 EAST MCDOWELL ROAD |
| Aircraft Owner City | MESA |
| Aircraft Owner State | AZ |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 85215 |
| 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 | Yes |
| Departure Airport Code | FLG |
| Departure City | |
| Departure State | |
| Departure Country | |
| Departure Time | 1146 |
| Departure Time Zone | MST |
| 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? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:34AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 3 |
| Runway Length | 6999 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |