Frederick Municipal Airport
Aircraft Accident/Incident Report

Frederick, Maryland 21701
Tuesady, April 21, 2009 13:55 EDT

NTSB Narrative Summary Released at Completion of Accident

During the landing roll, with the power lever at idle, the pilot heard a “pop,” followed by indications of the engine “spooling down.” He exited the runway and observed smoke coming from the engine compartment. Thinking this was residual fuel, he “spooled the engine.” Realizing there was a fire, he called for assistance and shut off the fuel selectors and firewall shutoff valve. After the accident, a FAA inspector examined the airplane and reported extensive thermal damage to the fuselage sub-frame and evidence of an engine fire. Numerous engine turbine blades were found on the pavement adjacent to where the fire occurred. A disassembly and inspection of the engine revealed that one or more of the compressor turbine (CT) blades failed. The engine was overhauled about 6 hours prior to the accident. The CT blades were manufactured under the FAA Parts Manufacture Approval (PMA) program. Extreme heat damage obliterated the fracture surfaces of the blades, therefore the reason for the blade failure(s) could not be determined. A functional test of the fuel control unit (FCU) revealed the Sg (specific gravity) dome, high idle stop screw, and minimum flow stop were set above the recommended range, which would result in higher than normal fuel flow. The FCU adjustments appeared to be made after the overhaul, however it could not be determined when the adjustments occurred. Although the higher than normal fuel flow setting probably did not result in the CT blade failures, it could have exacerbated the thermal damage and fire.

NTSB Probable Cause Narrative

A loss of engine power due to the failure of one or more compressor turbine blades for an undetermined reason.

Event Information

Type of Event Accident
Event Date 4/21/2009
Event Day of the Week Tuesday
Time of Event 1355
Event Time Zone Eastern Daylight Time
Event City Frederick
Event State MARYLAND
Event Country --
Zipcode of the event site 21701
Event Date Year 2009
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 392503N
Event Location Longitude 0772228W
Event Location Airport Frederick Municipal
Event Location Nearest Airport ID FDK
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1338 Eastern Daylight Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID FDK
Elevation of weather observation facility 303
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 4300
Sky/Lowest/Cloud Conditions Scattered
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) 20
Dew Point at event time (in degress fahrenheit) 10
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator Calm
Wind Gust Indicator --
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.7
Density Altitude (feet) --
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 26930
NTSB Notification Source FAA Eastern ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Jun 22 2010 11:47AM
User who most recently changed record johb
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N208JW
NTSB Number ERA09LA269
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 Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name CESSNA
Aircraft Model 208
Aircraft Series Identifier --
Aircraft Serial Number 20800166
Certified Max Gross Weight 7300
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats 2
Cabin Crew Seats --
Passenger Seats 8
Total number of seats on the aircraft 10
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Apr 15 2009 12:00AM
Airframe hours since last inspection 6
Airframe Hours 14056
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type Unknown
Aircraft Owner Name GREYSTOKE ENGINEERING INC
Aircraft Owner Street Address 4443 E BURNING TREE LOOP
Aircraft Owner City FLAGSTAFF
Aircraft Owner State AZ
Aircraft Owner Country USA
Aircraft Owner Zipcode 86004-7561
Operator is an individual? No
Operator Name GREYSTOKE ENGINEERING INC
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 4443 E BURNING TREE LOOP
Operator City FLAGSTAFF
Operator State AZ
Operator Country USA
Operator Zip code 86004-7561
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? No
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) Ferry
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code OKV
Departure City Winchester
Departure State VA
Departure Country USA
Departure Time 1330
Departure Time Zone EDT
Destination Same as Local Flt crash at destination city
Destination Airport Code FDK
Destination City Frederick
Destination State MD
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record May 10 2010 3:13PM
User who most recently changed record kenj
Since inspection or accident Time of Accident
Event Location Runway Number and Location 23
Runway Length 5220
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --