Pilot of an MO20C taxied onto the runway without clearance. Ground controller catches the error.

Attributes
ACN	406180
Time
Date	199806
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : srq
State Reference	FL
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	M-20 B/C Ranger
Operating Under FAR Part	Part 91
Flight Phase	ground other : taxi
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : cfi pilot : instrument pilot : private pilot : commercial
Experience	flight time last 90 days : 100 flight time total : 2300 flight time type : 60
ASRS Report	406180
Person 2
Affiliation	government : faa
Function	controller : ground
Qualification	controller : non radar
Events
Anomaly	incursion : runway non adherence : far non adherence : clearance
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I called ground prior to movement on ramp and was given a VFR clearance to read back. Read back ok. Prior to entering taxiway I reconfirmed 'am I clear to taxi to runway 22.' ground replied cleared to taxi to runway 22. I understood this to be a clearance to taxi to runway 22 and wait for 'clear to depart.' I was not told to hold short of runway 22 and taxied to run- up area for aircraft run-up and then onto runway 22 awaiting departure clearance. Ground controller asked what I was doing and I replied I understood you cleared me onto runway 22, but not to depart. He said 'no only to runway 22 not onto.' I started to taxi clear of runway 22. He said no stay there and await departure clearance, which I did. I misunderstood his taxi to meaning as he did not say 'hold short of runway 22.' this could be a potentially dangerous situation. As a helicopter pilot, primarily, we seldom use runways or txwys and have been to srq several times in the past and found controllers to be easy to work with. As a newly minted fixed wing pilot I carefully listen to all taxi instructions due to my low experience. I would expect a 'hold short' instruction if a controller wanted this. Even though no other traffic in the air or on the ground was affected by this, these sits must be avoided for everyone's well-being. I will not permit this confusion to arise again and hope others will learn by this situation.

Original NASA ASRS Text

Title: PLT OF AN MO20C TAXIED ONTO THE RWY WITHOUT CLRNC. GND CTLR CATCHES THE ERROR.

Narrative: I CALLED GND PRIOR TO MOVEMENT ON RAMP AND WAS GIVEN A VFR CLRNC TO READ BACK. READ BACK OK. PRIOR TO ENTERING TXWY I RECONFIRMED 'AM I CLR TO TAXI TO RWY 22.' GND REPLIED CLRED TO TAXI TO RWY 22. I UNDERSTOOD THIS TO BE A CLRNC TO TAXI TO RWY 22 AND WAIT FOR 'CLR TO DEPART.' I WAS NOT TOLD TO HOLD SHORT OF RWY 22 AND TAXIED TO RUN- UP AREA FOR ACFT RUN-UP AND THEN ONTO RWY 22 AWAITING DEP CLRNC. GND CTLR ASKED WHAT I WAS DOING AND I REPLIED I UNDERSTOOD YOU CLRED ME ONTO RWY 22, BUT NOT TO DEPART. HE SAID 'NO ONLY TO RWY 22 NOT ONTO.' I STARTED TO TAXI CLR OF RWY 22. HE SAID NO STAY THERE AND AWAIT DEP CLRNC, WHICH I DID. I MISUNDERSTOOD HIS TAXI TO MEANING AS HE DID NOT SAY 'HOLD SHORT OF RWY 22.' THIS COULD BE A POTENTIALLY DANGEROUS SIT. AS A HELI PLT, PRIMARILY, WE SELDOM USE RWYS OR TXWYS AND HAVE BEEN TO SRQ SEVERAL TIMES IN THE PAST AND FOUND CTLRS TO BE EASY TO WORK WITH. AS A NEWLY MINTED FIXED WING PLT I CAREFULLY LISTEN TO ALL TAXI INSTRUCTIONS DUE TO MY LOW EXPERIENCE. I WOULD EXPECT A 'HOLD SHORT' INSTRUCTION IF A CTLR WANTED THIS. EVEN THOUGH NO OTHER TFC IN THE AIR OR ON THE GND WAS AFFECTED BY THIS, THESE SITS MUST BE AVOIDED FOR EVERYONE'S WELL-BEING. I WILL NOT PERMIT THIS CONFUSION TO ARISE AGAIN AND HOPE OTHERS WILL LEARN BY THIS SIT.

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.