Aircraft Accident/Incident Report

Denver, Colorado 80249
Wednesday, October 22, 2003 17:30 MDT

NTSB Narrative Summary Released at Completion of Accident

The airplane was descending through 13,000 feet when the captain extended both spoilers as speed brakes to reduce the airplane's speed. The left spoiler came up and the right spoiler barely moved, causing the airplane to roll to the left. The pilots saw the amber-colored "Spoiler Fail CAS" light illuminate. The captain retracted the spoilers, rolled the airplane back to a level attitude, and began running the appropriate emergency checklist. The captain continued the descent and landed uneventfully. An examination of the airplane showed high internal resistance in the left and right spoilers' actuator coils. No other anomalies were found.

NTSB Probable Cause Narrative

the failure of the airplane's spoiler system when used as speed brakes due to high resistances in the spoilers' actuator coils.

Event Information

Type of Event Incident
Event Date 10/22/2003
Event Day of the Week Wednesday
Time of Event 1730
Event Time Zone Mountain Daylight Time
Event City Denver
Event State COLORADO
Event Country --
Zipcode of the event site 80249
Event Date Year 2003
Event Date Month 10
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 395131N
Event Location Longitude 1040401W
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 Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1753 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 40
Weather Observation Facility ID DEN
Elevation of weather observation facility 5431
Distance of event from weather observation facility (units?) 270
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 16000
Sky/Lowest/Cloud Conditions Few
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) 24
Dew Point at event time (in degress fahrenheit) -7
Wind Direction (degrees magnetic) 60
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 5
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.18
Density Altitude (feet) 7525
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 4
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 14894
NTSB Notification Source Bombardier Aerospace Flexjet
NTSB Notification Date Oct 22 2003 12:00AM
NTSB Notification Time 1745
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Mar 2 2004 8:07AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office Denver, CO FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N420FX
NTSB Number DEN04IA014
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed IFR
Flight plan Was Activated? No
Damage None
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Learjet
Aircraft Model 45
Aircraft Series Identifier --
Aircraft Serial Number 45-126
Certified Max Gross Weight 20500
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 11
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Unknown
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours 2102
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Bombardier Aerospace Flexjet
Aircraft Owner Street Address 3400 Waterview Parkway
Aircraft Owner City Richardson
Aircraft Owner State TX
Aircraft Owner Country USA
Aircraft Owner Zipcode 75080
Operator is an individual? No
Operator Name Vestar Capital Partners
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 1225 17th Street
Operator City Denver
Operator State CO
Operator Country USA
Operator Zip code 80202
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) Personal
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code TEB
Departure City Teterburo
Departure State NJ
Departure Country USA
Departure Time 1449
Departure Time Zone EDT
Destination Same as Local Flt crash at destination city
Destination Airport Code DEN
Destination City Denver
Destination State CA
Destination Country USA
Specific Phase of Flight Descent
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Dec 22 2003 3:17PM
User who most recently changed record MCBM
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 --