Princeton Airport
Aircraft Accident/Incident Report

Princeton, New Jersey 08540
Saturday, July 4, 2009 10:45 EDT

NTSB Narrative Summary Released at Completion of Accident

The student pilot stated that he was in the traffic pattern practicing touch-and-go landings. As he turned base, the engine went to idle, and he made an emergency landing in a field. The carburetor heat was in use at the time of engine failure. Examination of the airplane by a Federal Aviation Administration (FAA) inspector revealed that the flight control system components, engine, and system components revealed no evidence of preimpact mechanical malfunction. The current ambient temperature was 75 degrees Fahrenheit, with a dew point of 55 degrees Fahrenheit. Review of the carburetor icing probability chart revealed that serious carburetor icing could occur at glide power.

NTSB Probable Cause Narrative

The partial loss of engine power for undetermined reasons.

Event Information

Type of Event Accident
Event Date 7/4/2009
Event Day of the Week Saturday
Time of Event 1045
Event Time Zone Eastern Daylight Time
Event City Princeton
Event State NEW JERSEY
Event Country --
Zipcode of the event site 08540
Event Date Year 2009
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 402334N
Event Location Longitude 0743919W
Event Location Airport Princeton Airport
Event Location Nearest Airport ID 39N
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0
Degrees magnetic from airport --
Airport Elevation 128
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1053 Eastern Daylight Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID TTN
Elevation of weather observation facility 213
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 4500
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) 13
Wind Direction (degrees magnetic) 310
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 9
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 15
Altimeter Setting at event time (in. Hg) 29.89
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) 25952
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 Oct 21 2009 3:41PM
User who most recently changed record kenj
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N64178
NTSB Number ERA09LA379
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 172M
Aircraft Series Identifier --
Aircraft Serial Number 17265067
Certified Max Gross Weight 2400
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 Annual
Date of Last Inspection May 5 2009 12:00AM
Airframe hours since last inspection 13
Airframe Hours 5774
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type Unknown
Aircraft Owner Name Raitan Valley Flying School
Aircraft Owner Street Address 41 Airpark Road
Aircraft Owner City Princeton
Aircraft Owner State NJ
Aircraft Owner Country USA
Aircraft Owner Zipcode 08540
Operator is an individual? No
Operator Name Raitan Valley Flying School
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 41 Airpark Road
Operator City Princeton
Operator State NJ
Operator Country USA
Operator Zip code 08540
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 No
Departure Point Same as Event No
Departure Airport Code 39N
Departure City Princeton
Departure State NJ
Departure Country USA
Departure Time 1040
Departure Time Zone EDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code 39N
Destination City Princeton
Destination State NJ
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Aug 28 2009 9:14AM
User who most recently changed record kenj
Since inspection or accident Time of Accident
Event Location Runway Number and Location 28
Runway Length 3499
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --