Individually Owned: 150,657
Corporate Owned: 137,281
Dupage Airport
Aircraft Accident/Incident Report
West Chicago, Illinois 60185
Sunday, July 19, 2009 12:30 CDT
NTSB Narrative Summary Released at Completion of Accident
A previous maintenance entry in the airplane logbook indicated that the firewall was replaced and the airplane returned to service. The airplane had been operated for about 63 hours when the throttle control cable became unscrewed from the rod end of the throttle assembly during an instructional flight. The flight instructor and student pilot lost throttle control during an approach to a destination airport when engine speed increased to about 2,200-2,300 rpm. The flight instructor landed the airplane without further incident. The throttle control assemblies for the airplane do not have a key way at the throttle control knob to prevent rotation of the cable and unscrewing of the cable from the rod end should the jamnut become loose. The operator recommended that a safety device and not just a jamnut be installed to prevent the throttle control from disconnecting from the rod end.
NTSB Probable Cause Narrative
A partial loss of engine power due to the detachment of the throttle control cable from the throttle assembly during a landing approach. Contributing to the accident was the lack of a redundant means to preclude the detachment of the cable from the throttle assembly.
Event Information
| Type of Event | Incident |
| Event Date | 7/19/2009 |
| Event Day of the Week | Sunday |
| Time of Event | 1230 |
| Event Time Zone | Central Daylight Time |
| Event City | West Chicago |
| Event State | ILLINOIS |
| Event Country | -- |
| Zipcode of the event site | 60185 |
| Event Date Year | 2009 |
| Event Date Month | 7 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | -- |
| Event Location Longitude | -- |
| Event Location Airport | Dupage Airport |
| Event Location Nearest Airport ID | DPA |
| 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 | 759 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1152 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | DPA |
| Elevation of weather observation facility | -- |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | CDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 7000 |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | Clear |
| 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) | 21 |
| Dew Point at event time (in degress fahrenheit) | 12 |
| Wind Direction (degrees magnetic) | 320 |
| 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) | 30.15 |
| 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 | 2 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 25929 |
| NTSB Notification Source | Operator |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Oct 15 2009 10:54AM |
| User who most recently changed record | johb |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N77AF |
| NTSB Number | CEN09IA456 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | None |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | CESSNA |
| Aircraft Model | 172R |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 17280071 |
| Certified Max Gross Weight | 2450 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 4 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | 100 Hour |
| Date of Last Inspection | May 26 2009 12:00AM |
| Airframe hours since last inspection | 63 |
| Airframe Hours | 11880 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | Unknown |
| Aircraft Owner Name | Ameriflyers of Texas Inc |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Addison |
| Aircraft Owner State | TX |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 75001 |
| Operator is an individual? | No |
| Operator Name | American Flyers Inc |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | -- |
| Operator City | -- |
| Operator State | -- |
| Operator Country | USA |
| Operator Zip code | -- |
| 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) | Instructional |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | Yes |
| Departure Airport Code | DPA |
| Departure City | West Chicago |
| Departure State | IL |
| Departure Country | USA |
| Departure Time | 1000 |
| Departure Time Zone | CDT |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | DPA |
| Destination City | West Chicago |
| Destination State | IL |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Aug 6 2009 12:59PM |
| User who most recently changed record | galm |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 02L |
| Runway Length | 7571 |
| Runway Width | 100 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |