A PA28 pilot reports an all terrain vehicle crossing A39's runway as their aircraft was taking off.

Attributes
ACN	763161
Time
Date	200711
Local Time Of Day	1201 To 1800
Place
State Reference	AZ
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : bfm.tower
Operator	general aviation : instructional
Make Model Name	PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	ground : takeoff roll
Flight Plan	None
Person 1
Affiliation	other
Function	instruction : instructor oversight : pic
Qualification	pilot : cfi pilot : instrument pilot : commercial
Experience	flight time last 90 days : 200 flight time total : 1500 flight time type : 800
ASRS Report	763161
Events
Anomaly	conflict : ground less severe ground encounters : vehicle
Independent Detector	other flight crewa
Resolutory Action	flight crew : took precautionary avoidance action
Supplementary
Problem Areas	Airport
Primary Problem	Airport

Narrative:

Tough-and-go operations at A39; we had just landed on runway 21. We retracted flaps and applied takeoff power when an unknown person in a 'quad-runner' (a 4-WHEEL all-terrain vehicle) drove from behind the hangars on the south side of the runway; cut across the runway; and continued into the fields and housing on the north side of the runway. When the quad-runner crossed the active runway; we had sufficient airspeed to perform an obstacle takeoff. At rotation; there was approximately 1500 ft separation between us and the other vehicle. Since A39 is unattended; there is no type of airport management to register a complaint with.

Original NASA ASRS Text

Title: A PA28 PILOT REPORTS AN ALL TERRAIN VEHICLE CROSSING A39'S RWY AS THEIR ACFT WAS TAKING OFF.

Narrative: TOUGH-AND-GO OPS AT A39; WE HAD JUST LANDED ON RWY 21. WE RETRACTED FLAPS AND APPLIED TKOF PWR WHEN AN UNKNOWN PERSON IN A 'QUAD-RUNNER' (A 4-WHEEL ALL-TERRAIN VEHICLE) DROVE FROM BEHIND THE HANGARS ON THE S SIDE OF THE RWY; CUT ACROSS THE RWY; AND CONTINUED INTO THE FIELDS AND HOUSING ON THE N SIDE OF THE RWY. WHEN THE QUAD-RUNNER CROSSED THE ACTIVE RWY; WE HAD SUFFICIENT AIRSPD TO PERFORM AN OBSTACLE TKOF. AT ROTATION; THERE WAS APPROX 1500 FT SEPARATION BTWN US AND THE OTHER VEHICLE. SINCE A39 IS UNATTENDED; THERE IS NO TYPE OF ARPT MGMNT TO REGISTER A COMPLAINT WITH.

Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.