Aircraft Accident/Incident Report

Helena, Alabama 35080
Wednesday, November 24, 1999 19:35 CST

NTSB Narrative Summary Released at Completion of Accident

The pilot called the FAA, Anniston FSS about 15 minutes before departure and requested a weather briefing for a flight from Montgomery to Birmingham. The pilot was told that there was an airmet in effect for instrument flight rules conditions from Birmingham northward and that visual flight rules flight was not recommended. The flight departed Montgomery at about 1855. About 1935, witnesses heard the helicopter flying from south to north at a low altitude, making ' a steady, loud, whining noise.' About 2-3 seconds later they heard a 'thump' crash sound and then heard no more sound from the helicopter. They went outside of their house and observed the fire from the wreckage of N395WM. The witnesses stated that at the time of the accident the weather was dark and slightly foggy. Post-crash examination of the wreckage showed the helicopter had impacted in a near nose down vertical descent, while on a 185-degree heading. All components of the helicopter, which are necessary for flight, were located on or around the main wreckage. A post-crash fire had consumed the fuselage of the helicopter. Examination of the remaining portions of the helicopter structure, flight controls, main and tail rotor systems, and engine showed no evidence of pre-crash failure or malfunction. Damage to the main rotor system and engine drive shaft was consistent with the engine and rotor system operating at the time of the accident.

NTSB Probable Cause Narrative

The pilots continued visual flight rules flight into instrument meteorological conditions resulting in his becoming spatially disoriented and loosing control of the helicopter, which resulted in an uncontrolled descent and impact with the ground.

Event Information

Type of Event Accident
Event Date 11/24/1999
Event Day of the Week Wednesday
Time of Event 1935
Event Time Zone Central Standard Time
Event City HELENA
Event State ALABAMA
Event Country --
Zipcode of the event site 35080
Event Date Year 1999
Event Date Month 11
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 Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 1953 Central Standard Time
Direction of event from weather observation facility (degrees) 20
Weather Observation Facility ID BHM
Elevation of weather observation facility 644
Distance of event from weather observation facility (units?) 22
Time Zone of the weather observation CST
Lighting Conditions Night/Dark
Lowest Ceiling Height 800
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 2
Air Temperature at event time (in degrees celsius) 14
Dew Point at event time (in degress fahrenheit) 13
Wind Direction (degrees magnetic) 350
Variable Wind Indicator Unknown
Wind Speed (knots) 8
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 0
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal 2
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 1858
NTSB Notification Source --
NTSB Notification Date Nov 24 1999 12:00AM
NTSB Notification Time 2220
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Apr 20 2001 4:06AM
User who most recently changed record dbo
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N395WM
NTSB Number MIA00FA029
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 Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name Hughes
Aircraft Model 369HS
Aircraft Series Identifier 369HS
Aircraft Serial Number 760828S
Certified Max Gross Weight 2550
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 5
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection May 17 1999 12:00AM
Airframe hours since last inspection 97
Airframe Hours 5483
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name VERTICAL AIR, INC.
Aircraft Owner Street Address 4040 FARR ROAD
Aircraft Owner City BESSEMER
Aircraft Owner State AL
Aircraft Owner Country
Aircraft Owner Zipcode 35022
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) Business
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code MGM
Departure City MONTGOMERY
Departure State AL
Departure Country
Departure Time 1855
Departure Time Zone CST
Destination Same as Local Flt --
Destination Airport Code
Destination City BESSEMER
Destination State AL
Destination Country
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Apr 20 2001 4:06AM
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 --