C172 pilot inadvertently crossed runway hold line while manipulating the GPS.

Attributes
ACN	784979
Time
Date	200805
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dvt.airport
State Reference	AZ
Altitude	agl single value : 0
Environment
Flight Conditions	VMC Marginal
Light	Daylight
Aircraft 1
Controlling Facilities	tower : dvt.tower
Operator	general aviation : personal
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	ground : taxi
Flight Plan	None
Aircraft 2
Controlling Facilities	tower : dvt.tower
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Route In Use	approach : visual
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 25 flight time total : 180 flight time type : 165
ASRS Report	784979
Person 2
Affiliation	government : faa
Function	controller : local
Events
Anomaly	conflict : ground critical incursion : runway non adherence : clearance
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

The incident occurred at dvt (deer valley airport) during run-up/takeoff operations. Incident aircraft was positioned at runway 7R and contacted tower to notify that he was ready for departure. 'Deer valley tower; cessna XXXX; at C2; ready for departure.' 'cessna XXX; hold short 7R; landing traffic.' 'deer valley tower; holding short 7R.' after reading back command from tower; pilot readied GPS for flight. During this process; he inadvertently relaxed pressure on brakes causing aircraft to roll across the 'hold short' line. Tower immediately contacted aircraft to reaffirm hold short. Pilot responded and waited for further instructions from tower. During incursion; tower communicated to incoming; landing aircraft to 'go around' and the landing aircraft complied. After landing aircraft was clear; tower informed pilot 'clear for takeoff; straight out.' pilot complied with instructions and proceeded to take off without further incident.

Original NASA ASRS Text

Title: C172 PLT INADVERTENTLY CROSSED RWY HOLD LINE WHILE MANIPULATING THE GPS.

Narrative: THE INCIDENT OCCURRED AT DVT (DEER VALLEY ARPT) DURING RUN-UP/TKOF OPS. INCIDENT ACFT WAS POSITIONED AT RWY 7R AND CONTACTED TWR TO NOTIFY THAT HE WAS READY FOR DEP. 'DEER VALLEY TWR; CESSNA XXXX; AT C2; READY FOR DEP.' 'CESSNA XXX; HOLD SHORT 7R; LNDG TFC.' 'DEER VALLEY TWR; HOLDING SHORT 7R.' AFTER READING BACK COMMAND FROM TWR; PLT READIED GPS FOR FLT. DURING THIS PROCESS; HE INADVERTENTLY RELAXED PRESSURE ON BRAKES CAUSING ACFT TO ROLL ACROSS THE 'HOLD SHORT' LINE. TWR IMMEDIATELY CONTACTED ACFT TO REAFFIRM HOLD SHORT. PLT RESPONDED AND WAITED FOR FURTHER INSTRUCTIONS FROM TWR. DURING INCURSION; TWR COMMUNICATED TO INCOMING; LNDG ACFT TO 'GO AROUND' AND THE LNDG ACFT COMPLIED. AFTER LNDG ACFT WAS CLR; TWR INFORMED PLT 'CLR FOR TKOF; STRAIGHT OUT.' PLT COMPLIED WITH INSTRUCTIONS AND PROCEEDED TO TAKE OFF WITHOUT FURTHER INCIDENT.

Data retrieved from NASA's ASRS site as of May 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.