Princeton Municipal Airport
Aircraft Accident/Incident Report

Princeton, Minnesota 55371
Friday, September 13, 2013 15:00 CDT

NTSB Narrative Summary Released at Completion of Accident

The flight instructor reported that the student pilot was flying S-turns over a road at 1,000 feet above ground level when a bald eagle struck the right horizontal stabilizer. The flight instructor took the controls, declared an emergency, and proceeded to land at the nearest airport. The control yoke was “buffeting,” but the engine continued to run smoothly.  On final approach, the flight instructor noticed that the rudder controls were impaired; however, the wind was calm so the landing was without incident. The examination of the airplane revealed that there was a large indentation on the right horizontal stabilizer with bird feathers embedded in it. The right side of the horizontal stabilizer was canted. In addition, the tail cone had been pushed upward and was in contact with the rudder, impeding its movement. 

NTSB Probable Cause Narrative

An in-flight collision with a bald eagle.

Event Information

Type of Event Accident
Event Date 9/13/2013
Event Day of the Week Friday
Time of Event 1500
Event Time Zone Central Daylight Time
Event City Princeton
Event State MINNESOTA
Event Country --
Zipcode of the event site 55371
Event Date Year 2013
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 453336N
Event Location Longitude 0933630W
Event Location Airport Princeton Municipal Airport
Event Location Nearest Airport ID PNM
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 0
Airport Elevation 980
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1300 Central Daylight Time
Direction of event from weather observation facility (degrees) 320
Weather Observation Facility ID PNM
Elevation of weather observation facility 980
Distance of event from weather observation facility (units?) 5
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
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) 19
Dew Point at event time (in degress fahrenheit) 5
Wind Direction (degrees magnetic) 200
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 3
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.24
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) 31872
NTSB Notification Source FAA-AGL-ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Sep 19 2013 6:33PM
User who most recently changed record silj
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N526PU
NTSB Number CEN13CA550
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name PIPER
Aircraft Model PA-28-161
Aircraft Series Identifier --
Aircraft Serial Number 2841191
Certified Max Gross Weight 2325
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats 4
Total number of seats on the aircraft --
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Aug 13 2013 12:00AM
Airframe hours since last inspection --
Airframe Hours 13891
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name METRO AIRCRAFT CO
Aircraft Owner Street Address 1101 E 78TH ST STE 150
Aircraft Owner City BLOOMINGTON
Aircraft Owner State MN
Aircraft Owner Country USA
Aircraft Owner Zipcode 554201402
Operator is an individual? No
Operator Name Thunderbird Aviation
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Crystal
Operator State MN
Operator Country USA
Operator Zip code 55429
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) Instructional
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code MIC
Departure City Crystal
Departure State MN
Departure Country USA
Departure Time 1130
Departure Time Zone CDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code MIC
Destination City Crystal
Destination State MN
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Sep 19 2013 6:44PM
User who most recently changed record silj
Since inspection or accident Time of Accident
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --