Boulder City Municipal Airport
Aircraft Accident/Incident Report

Boulder City, Nevada 89005
Tuesady, April 2, 2002 16:45 PST

NTSB Narrative Summary Released at Completion of Accident

The airplane made an off airport forced landing following a loss of engine power immediately after departure. After takeoff, upon reaching 300 to 400 feet above ground level (agl), the engine experienced a rapid loss of power. The pilot maneuvered the airplane in a gliding configuration and, after determining that the airplane was unable to reach airport, opted to perform a forced landing in a dry riverbed. While in the landing flare, the airplane collided with vegetation and came to an abrupt stop after impacting a large bush. A review of the airplane's maintenance records disclosed that the engine had a history of ongoing problems with the idle mixture. In an effort to address those problems, the operator had the carburetor overhauled about a week prior the accident. The mixture discrepancy occurred again following the carburetor overhaul. After the accident, an engine examination revealed that spark plugs from the number one cylinder, as well as the top number two plug, appeared dark and sooty, with the bottom number two plug being oily. In addition, the bottom number three and four plugs were covered in lead deposits. Investigators performed an engine run, where it accelerated up to 1,600 revolutions per minute (rpm) and, despite black smoke emitting from the exhaust stack, ran smoothly; after leaning out the mixture, it accelerated up to 2,100 rpm and the exhaust cleared. A detailed examination of the carburetor revealed no mechanical malfunctions or anomalies other than an excessively low idle fuel flow.

NTSB Probable Cause Narrative

a loss of engine power due to an undetermined malfunction of the carburetor.

Event Information

Type of Event Accident
Event Date 4/2/2002
Event Day of the Week Tuesday
Time of Event 1645
Event Time Zone Pacific Standard Time
Event City Boulder City
Event State NEVADA
Event Country --
Zipcode of the event site 89005
Event Date Year 2002
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 355650N
Event Location Longitude 1145139W
Event Location Airport Boulder City Municipal Airport
Event Location Nearest Airport ID 61B
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 1
Degrees magnetic from airport 270
Airport Elevation 2201
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1656 Pacific Standard Time
Direction of event from weather observation facility (degrees) 120
Weather Observation Facility ID LAS
Elevation of weather observation facility 2127
Distance of event from weather observation facility (units?) 16
Time Zone of the weather observation PST
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) 10
Air Temperature at event time (in degrees celsius) 31
Dew Point at event time (in degress fahrenheit) -3
Wind Direction (degrees magnetic) 100
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 7
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.76
Density Altitude (feet) 4674
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) 17972
NTSB Notification Source FAA
NTSB Notification Date Apr 2 2002 12:00AM
NTSB Notification Time 1741
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jul 7 2005 10:33AM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office WP-LAS-FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N48908
NTSB Number LAX02LA123
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 Cessna
Aircraft Model 152
Aircraft Series Identifier --
Aircraft Serial Number 15281043
Certified Max Gross Weight 1670
Aircraft Category Airplane
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 100 Hour
Date of Last Inspection Feb 21 2002 12:00AM
Airframe hours since last inspection 61.4
Airframe Hours 7073
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name AIR EXCEL, INC.
Aircraft Owner Street Address 1201 AIRPORT RD
Aircraft Owner City BOULDER CITY
Aircraft Owner State NV
Aircraft Owner Country USA
Aircraft Owner Zipcode 89005
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 --
Owner has at least one certificate None
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) Instructional
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code 61B
Departure City Boulder City
Departure State NV
Departure Country USA
Departure Time 1640
Departure Time Zone PST
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 Takeoff - initial climb
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Apr 19 2005 2:04PM
User who most recently changed record COOS
Since inspection or accident Time of Accident
Event Location Runway Number and Location 27L
Runway Length 4800
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --