Aircraft Accident/Incident Report

Cheyenne, Wyoming 80217
Wednesday, April 27, 1994 8:00 MDT

NTSB Narrative Summary Released at Completion of Accident

WHILE ON A SCHEDULED PASSENGER FLIGHT AT 15,000 FEET MSL, AND WHILE PASSING OVER CHEYENNE, WYOMING, THE AIRCRAFT LOST PART OF A PROPELLER BLADE FROM THE LEFT ENGINE. THE ENGINE WAS SECURED, AND DUE TO INCLEMENT WEATHER IN THE CHEYENNE AREA, THE FLIGHT PROCEEDED TO ITS SCHEDULED DESTINATION IN DENVER, COLORADO, WHERE IT LANDED WITHOUT INCIDENT. THE PROPELLER BLADE WAS REMOVED AND TESTED AT BOTH THE MANUFACTURER'S FACILITIES AND AT THE MATERIALS LABORATORY AT WRIGHT PATTERSON AIR FORCE BASE. THE WRIGHT PATTERSON LABORATORY PROVIDED INFORMATION THAT THERE WAS A PROBABLE NICK OR GOUGE IN THE LEADING EDGE OF THE BLADE AT THE FAILURE POINT. THE SOURCE OF THAT DAMAGE WAS NOT DISCOVERED DURING THE COURSE OF THE INVESTIGATION.

NTSB Probable Cause Narrative

A PARTIAL FAILURE OF THE LEADING EDGE TIP PORTION OF ONE OF THE LEFT ENGINE PROPELLER BLADES DUE TO PREVIOUS IMPACT DAMAGE FROM AN UNKNOWN SOURCE.

Event Information

Type of Event Incident
Event Date 4/27/1994
Event Day of the Week Wednesday
Time of Event 800
Event Time Zone Mountain Daylight Time
Event City CHEYENNE
Event State WYOMING
Event Country --
Zipcode of the event site 80217
Event Date Year 1994
Event Date Month 4
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 750 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID CYS
Elevation of weather observation facility 6156
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height 1000
Lowest Non-Ceiling Height 400
Sky/Lowest/Cloud Conditions Scattered
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) -4
Dew Point at event time (in degress fahrenheit) -4
Wind Direction (degrees magnetic) 60
Variable Wind Indicator Unknown
Wind Speed (knots) 4
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 21
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 5000
NTSB Notification Source --
NTSB Notification Date Apr 28 1994 12:00AM
NTSB Notification Time 1500
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 6 2000 11:01AM
User who most recently changed record dbo
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N141UE
NTSB Number FTW94IA139
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage Minor
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name BEECH
Aircraft Model 1900C
Aircraft Series Identifier 1900C
Aircraft Serial Number UC141
Certified Max Gross Weight 16600
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 21
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Apr 23 1994 12:00AM
Airframe hours since last inspection 36
Airframe Hours 6430
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name GREAT LAKES AVIATION, LTD.
Aircraft Owner Street Address 1965 130TH STREET
Aircraft Owner City SPENCER
Aircraft Owner State IA
Aircraft Owner Country
Aircraft Owner Zipcode 51301
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 GLBA
Owner has at least one certificate Yes - certificate holder
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 Scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code BIS
Departure City BISMARCK
Departure State ND
Departure Country
Departure Time 555
Departure Time Zone MDT
Destination Same as Local Flt --
Destination Airport Code DEN
Destination City DENVER
Destination State CO
Destination Country
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:30AM
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 --