Pilot of small aircraft on training flight took takeoff clearance directed to another flight.

Attributes
ACN	164372
Time
Date	199011
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dpa
State Reference	IL
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	climbout : takeoff ground : preflight ground other : taxi
Flight Plan	VFR
Aircraft 2
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	climbout : takeoff ground other : taxi
Flight Plan	VFR
Person 1
Affiliation	Other
Function	instruction : instructor oversight : pic
Qualification	pilot : cfi pilot : commercial pilot : instrument
Experience	flight time last 90 days : 100 flight time total : 1500
ASRS Report	164372
Person 2
Affiliation	Other
Function	instruction : instructor oversight : pic
Qualification	pilot : instrument pilot : cfi pilot : commercial
Events
Anomaly	incursion : runway other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew faa : investigated
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

My aircraft is small aircraft. The incident involves a runway incursion whereas I thought I was cleared for takeoff, but wasn't. At no time was there any intentional disregard for safety, far's or control tower authority. The incident was due strictly to communication problems at dupage due to heavy traffic. It is important to note that dupage airport is a very congested VFR airport with 2 runways. There is constantly a mix of VFR and IFR arrs and departures and training aircraft in the pattern causing a heavy workload on the tower. Combined with inexperienced trainees often operating the tower, stress, short tempers, arrogance, sarcasm and unprofessionalism of the tower operators is common. At the time of my incidence, a trnee was controling air traffic with an instrument nearby. My aircraft, was getting ready for takeoff at runway 10 when small aircraft B was cleared for takeoff. Part of the problem was caused by the similarity of the call sign.

Original NASA ASRS Text

Title: PLT OF SMA ON TRAINING FLT TOOK TKOF CLRNC DIRECTED TO ANOTHER FLT.

Narrative: MY ACFT IS SMA. THE INCIDENT INVOLVES A RWY INCURSION WHEREAS I THOUGHT I WAS CLRED FOR TKOF, BUT WASN'T. AT NO TIME WAS THERE ANY INTENTIONAL DISREGARD FOR SAFETY, FAR'S OR CTL TWR AUTHORITY. THE INCIDENT WAS DUE STRICTLY TO COM PROBS AT DUPAGE DUE TO HVY TFC. IT IS IMPORTANT TO NOTE THAT DUPAGE ARPT IS A VERY CONGESTED VFR ARPT WITH 2 RWYS. THERE IS CONSTANTLY A MIX OF VFR AND IFR ARRS AND DEPS AND TRNING ACFT IN THE PATTERN CAUSING A HVY WORKLOAD ON THE TWR. COMBINED WITH INEXPERIENCED TRAINEES OFTEN OPERATING THE TWR, STRESS, SHORT TEMPERS, ARROGANCE, SARCASM AND UNPROFESSIONALISM OF THE TWR OPERATORS IS COMMON. AT THE TIME OF MY INCIDENCE, A TRNEE WAS CTLING AIR TFC WITH AN INSTR NEARBY. MY ACFT, WAS GETTING READY FOR TKOF AT RWY 10 WHEN SMA B WAS CLRED FOR TKOF. PART OF THE PROB WAS CAUSED BY THE SIMILARITY OF THE CALL SIGN.

Data retrieved from NASA's ASRS site as of July 2007 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.