Gallatin Field Airport
Aircraft Accident/Incident Report

Belgrade, Montana 59714
Thursday, June 17, 1999 11:45 MDT

NTSB Narrative Summary Released at Completion of Accident

After performing two 360 degree turns on base leg before turning final due to traffic which had not cleared the runway, the glider was cleared to land. Ground control asked him to immediately remove the glider off the north side of the runway upon rolling out. The student was flying the glider at that time. The tow pilot entered the runway in front of the glider and motioned to turn the glider off the runway. The glider flight instructor said that he started to give instructions to the student to put the left wing down to start the turn, but realized they were going too fast to safely make a turn without hitting the tow pilot. The instructor took the controls and tried to make a right turn away from the tow pilot and tow plane, but toward the runway. The wing tip of the glider struck the prop of the tow plane and caused damage to the underside of the glider's wing. The tow pilot noted that he assumed the tower would have told the glider pilot the same instructions he had received. He said he expected the glider pilot to be prepared for his hand signals directing him off of the runway. The tow pilot believed that, not having been briefed by the tower, the glider was landed longer and faster than usual to fit the flight instruction that the student required. The instructor said that while the instructions from the tower were distracting and caused the glider to be low on final, ' I think the communication to the tow pilot (and not the glider) caused the tow pilot to enter the runway and caused the evasive maneuver that contributed to the accident. Despite the confusion a safe landing was underway until that time; I should have rolled out straight ahead and made the tow pilot jump clear and then the collision would have never occurred.'

NTSB Probable Cause Narrative

The pilot in command's failure to maintain clearance from a parked airplane during his attempt to avoid a person on the runway.

Event Information

Type of Event Accident
Event Date 6/17/1999
Event Day of the Week Thursday
Time of Event 1145
Event Time Zone Mountain Daylight Time
Event City BELGRADE
Event State MONTANA
Event Country --
Zipcode of the event site 59714
Event Date Year 1999
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport GALLATIN FIELD
Event Location Nearest Airport ID BZN
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 4462
Weather Briefing Completeness Unknown
Investigator's weather source Pilot
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 6
Air Temperature at event time (in degrees celsius) 21
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Calm
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 369
NTSB Notification Source --
NTSB Notification Date Jun 17 1999 12:00AM
NTSB Notification Time 1745
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 12 2000 11:40AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N70741
NTSB Number SEA99LA087
Missing Aircraft Indicator N
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 Let
Aircraft Model L-13
Aircraft Series Identifier L-13
Aircraft Serial Number 27341
Certified Max Gross Weight 1103
Aircraft Category Glider
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 2
Number of Engines --
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name BIG SKY SOARING
Aircraft Owner Street Address P. O. BOX 808
Aircraft Owner City BELGRADE
Aircraft Owner State MT
Aircraft Owner Country
Aircraft Owner Zipcode 59714
Operator is an individual? --
Operator Name SUNBIRD AVIATION, INC
Operator Same as Owner? No
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? No
Certified for Part 133 or 137 Operation Unknown
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 BZN
Departure City
Departure State
Departure Country
Departure Time 1130
Departure Time Zone MDT
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 Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:30AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 12
Runway Length 4000
Runway Width 200
Sight Seeing flight No
Air Medical Flight No
Medical Flight --