Havre City-County Airport
Aircraft Accident/Incident Report

Havre, Montana 59501
Monday, April 10, 2006 8:00 MDT

NTSB Narrative Summary Released at Completion of Accident

The pilot/owner discovered the airplane's battery had discharged over the winter months, and was attempting to start the airplane by hand propping it. The pilot reported that he had set the parking brake, and that the right brake failed during the starting procedure; the airplane taxied into a hangar without an occupant on board. The outboard two feet of the right wing was bent and wrinkled, and the right flap was pushed into the fuselage. The Cessna 170B maintenance manual states that a discharged battery should be charged on the ground before attempting flight. The Federal Aviation Administration’s Flight Training Handbook, AC 61-21A, states: "It is recommended that an engine never be 'hand propped' unless a qualified person thoroughly familiar with the operation of all the controls is seated at the controls and the brakes set."

NTSB Probable Cause Narrative

The pilot's improper starting procedures in attempting to hand-prop the airplane's engine. Contributing factors were the discharged battery, the failure of the right parking brake and the hangar which the aircraft collided with.

Event Information

Type of Event Accident
Event Date 4/10/2006
Event Day of the Week Monday
Time of Event 800
Event Time Zone Mountain Daylight Time
Event City Havre
Event State MONTANA
Event Country --
Zipcode of the event site 59501
Event Date Year 2006
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 483235N
Event Location Longitude 1094544W
Event Location Airport Havre City-County Airport
Event Location Nearest Airport ID HVR
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 2590
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 755 Mountain Daylight Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID HVR
Elevation of weather observation facility 2590
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 10000
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) 3
Dew Point at event time (in degress fahrenheit) -1
Wind Direction (degrees magnetic) 300
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) 29.67
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) 20224
NTSB Notification Source FAA ROC
NTSB Notification Date Apr 11 2006 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Aug 29 2006 3:49PM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office Helena, MT

Aircraft Involved

Aircraft #1

Aircraft Registration Number N2831C
NTSB Number SEA06CA073
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 Cessna
Aircraft Model 170B
Aircraft Series Identifier --
Aircraft Serial Number 26374
Certified Max Gross Weight 2200
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 Apr 1 2005 12:00AM
Airframe hours since last inspection 50
Airframe Hours 2550
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name John R. Alex
Aircraft Owner Street Address 4880 4Th. St., West
Aircraft Owner City Havre
Aircraft Owner State MT
Aircraft Owner Country USA
Aircraft Owner Zipcode 59501
Operator is an individual? No
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 --
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) Personal
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code --
Departure City Havre
Departure State MT
Departure Country USA
Departure Time --
Departure Time Zone --
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code --
Destination City --
Destination State --
Destination Country --
Specific Phase of Flight Standing - starting engine(s)
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record May 25 2006 9:08PM
User who most recently changed record STAM
Since inspection or accident Time of Accident
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --