Narrative:

I was departure runway 24 at islip (kisp) this afternoon and misunderstood the controller's instrs. This was an intersection takeoff, and an airliner was taxiing to the end of the runway. I heard the controller tell me to 'hold short on runway 24', when in 20/20 hindsight he must have said 'hold short of runway 24'. The normal phraseology is 'position and hold' but I was sure I heard the word 'on', so even though I felt a bit uncomfortable about holding in the middle of a runway, instead of asking for clarification, I repeated the instruction with an emphasis on the word 'on', and taxied into position, expecting a quick takeoff clearance to follow another piston engined aircraft that had just been cleared for takeoff. I remember thinking that it was nice the controller would be clearing me before the jet, so I wouldn't have to a wake turbulence delay, and figured that was why he wanted me to position and hold. What I didn't know was that hawker jet was on final. Because I was on the runway the hawker had to go around. The main rule I should have followed to avoid this was to ask for clarification, since I did have a feeling the instructions were unusual, instead of repeating what I heard the controller and counting on him to correct me if this was wrong, particularly with the recent emphasis in aviation literature on avoiding runway incursions.

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Original NASA ASRS Text

Title: C182 MISUNDERSTANDS ISP LC CLRNC AND TAXIS ONTO RWY CAUSING A HS25 ON FINAL TO GAR.

Narrative: I WAS DEP RWY 24 AT ISLIP (KISP) THIS AFTERNOON AND MISUNDERSTOOD THE CTLR'S INSTRS. THIS WAS AN INTXN TKOF, AND AN AIRLINER WAS TAXIING TO THE END OF THE RWY. I HEARD THE CTLR TELL ME TO 'HOLD SHORT ON RWY 24', WHEN IN 20/20 HINDSIGHT HE MUST HAVE SAID 'HOLD SHORT OF RWY 24'. THE NORMAL PHRASEOLOGY IS 'POS AND HOLD' BUT I WAS SURE I HEARD THE WORD 'ON', SO EVEN THOUGH I FELT A BIT UNCOMFORTABLE ABOUT HOLDING IN THE MIDDLE OF A RWY, INSTEAD OF ASKING FOR CLARIFICATION, I REPEATED THE INSTRUCTION WITH AN EMPHASIS ON THE WORD 'ON', AND TAXIED INTO POS, EXPECTING A QUICK TKOF CLRNC TO FOLLOW ANOTHER PISTON ENGINED ACFT THAT HAD JUST BEEN CLRED FOR TKOF. I REMEMBER THINKING THAT IT WAS NICE THE CTLR WOULD BE CLRING ME BEFORE THE JET, SO I WOULDN'T HAVE TO A WAKE TURB DELAY, AND FIGURED THAT WAS WHY HE WANTED ME TO POS AND HOLD. WHAT I DIDN'T KNOW WAS THAT HAWKER JET WAS ON FINAL. BECAUSE I WAS ON THE RWY THE HAWKER HAD TO GAR. THE MAIN RULE I SHOULD HAVE FOLLOWED TO AVOID THIS WAS TO ASK FOR CLARIFICATION, SINCE I DID HAVE A FEELING THE INSTRUCTIONS WERE UNUSUAL, INSTEAD OF REPEATING WHAT I HEARD THE CTLR AND COUNTING ON HIM TO CORRECT ME IF THIS WAS WRONG, PARTICULARLY WITH THE RECENT EMPHASIS IN AVIATION LITERATURE ON AVOIDING RWY INCURSIONS.

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.