Aircraft Accident/Incident Report

Conchas, New Mexico 88416
Monday, May 7, 2001 9:35 MDT

NTSB Narrative Summary Released at Completion of Accident

The pilot was conducting low level wildlife surveillance. He stated that the atmosphere was humid. When the helicopter was refueled, he noticed that the carburetor had accumulated condensation from the humid air. The pilot departed and after 5 minutes of flight, he noticed that the carburetor air temperature gauge was reading in the lower one third of the yellow caution range. When he adjusted the carburetor heat control lever, the engine lost power. The pilot made an autorotation to an open area. The helicopter landed hard, the main rotor blade contacted and severed the tail boom, and the extended gear legs collapsed.

NTSB Probable Cause Narrative

the pilot's misjudgment of the flare, which resulted in a hard landing. Contributing factors were weather conditions conducive to carburetor icing, the pilot's delay in applying carburetor heat, and his inattention to the carburetor air temperature gauge.

Event Information

Type of Event Accident
Event Date 5/7/2001
Event Day of the Week Monday
Time of Event 935
Event Time Zone Mountain Daylight Time
Event City Conchas
Event State NEW MEXICO
Event Country --
Zipcode of the event site 88416
Event Date Year 2001
Event Date Month 5
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 --
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Not pertinent
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 1200
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 9
Dew Point at event time (in degress fahrenheit) 0
Wind Direction (degrees magnetic) 45
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 10
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 15
Altimeter Setting at event time (in. Hg) 30.34
Density Altitude (feet) 4141
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 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 10502
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Sep 19 2001 10:36AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N40296
NTSB Number DEN01TA095
Missing Aircraft Indicator --
Federal Aviation Reg. Part Public Use
Type of Flight Plan filed Company VFR
Flight plan Was Activated? Yes
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Hiller
Aircraft Model UH-12E
Aircraft Series Identifier --
Aircraft Serial Number 5149
Certified Max Gross Weight 3100
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 Apr 2 2001 12:00AM
Airframe hours since last inspection 22
Airframe Hours 1531
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name MOAIR
Aircraft Owner Street Address P.O. Box 1052
Aircraft Owner City Ulysses
Aircraft Owner State KS
Aircraft Owner Country USA
Aircraft Owner Zipcode 67880
Operator is an individual? No
Operator Name Miller Aero Service, Inc.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 317 S. Hart St.
Operator City Boise City
Operator State OK
Operator Country USA
Operator Zip code 73933
Operator Code MLRA
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) Public Use
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code NONE
Departure City Conchas
Departure State NM
Departure Country USA
Departure Time 925
Departure Time Zone MDT
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 --
Date of most recent change to record Aug 21 2001 4:32PM
User who most recently changed record MCBM
Since inspection or accident Last Inspection
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --