Narrative:

Myf has 3 runways: runway 5/23, runway 10L/28R, and runway 10R/28L. I have almost always used runway 28R for takeoffs. On this day runway 23 was in use. I was cleared to taxi to runway 23 from refueling station to runway 23 via txwys H, B, taxi onto runway 28R and then taxiway C to the runup area. However, something different occurred that I had not experienced before and is key to my error. I was told by ground to stay on ground frequency and let them know when I was ready after runup. The runup area is in close proximity to the entrance to runway 23. I finished my runup and let ground know that I was ready and was told to taxi to runway 23 and contact tower. I should have taxied to the hold short line which was very close by. I did not. I mistakenly taxied onto runway 23. I had developed a pattern of always talking to the tower after runup as is the norm when using runway 28R. I was in this frame of mind when given the taxi clearance to runway 23. I incorrectly interpreted this as a tower clearance to taxi onto the runway. Once on tower frequency, I was told of my error, which I had realized myself at that point and I explained and apologized that I thought ground had cleared me onto the runway. This, of course, was incorrect nor could ground do that. But I had interpreted it that way due to the mind set I was in at that phase of the flight. I was not used to talking to ground after runup and was in a talking to the tower for takeoff pattern of thought. 1 GA aircraft on 1 mi final (told to me by the controller on the phone later) had to go around. I did observe it passing high overhead. I was eventually cleared for takeoff and asked to call the tower upon landing, which I did. Corrective actions: it was my mistake and I alone am responsible. I will seek training on my own and comply with whatever FSDO will decide. However, I would suggest that if ground is giving taxi instructions to a runway for such a short distance from the runup area where you would normally be talking to the tower it would help if the same tower terminology (hold short) was used, and expect a readback of those hold short instructions. I believe this would have prevented my error.

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Original NASA ASRS Text

Title: C172 PLT IS INSTRUCTED 'TAXI TO' A RWY, AND TAXIED INTO POS ON THE RWY.

Narrative: MYF HAS 3 RWYS: RWY 5/23, RWY 10L/28R, AND RWY 10R/28L. I HAVE ALMOST ALWAYS USED RWY 28R FOR TKOFS. ON THIS DAY RWY 23 WAS IN USE. I WAS CLRED TO TAXI TO RWY 23 FROM REFUELING STATION TO RWY 23 VIA TXWYS H, B, TAXI ONTO RWY 28R AND THEN TXWY C TO THE RUNUP AREA. HOWEVER, SOMETHING DIFFERENT OCCURRED THAT I HAD NOT EXPERIENCED BEFORE AND IS KEY TO MY ERROR. I WAS TOLD BY GND TO STAY ON GND FREQ AND LET THEM KNOW WHEN I WAS READY AFTER RUNUP. THE RUNUP AREA IS IN CLOSE PROX TO THE ENTRANCE TO RWY 23. I FINISHED MY RUNUP AND LET GND KNOW THAT I WAS READY AND WAS TOLD TO TAXI TO RWY 23 AND CONTACT TWR. I SHOULD HAVE TAXIED TO THE HOLD SHORT LINE WHICH WAS VERY CLOSE BY. I DID NOT. I MISTAKENLY TAXIED ONTO RWY 23. I HAD DEVELOPED A PATTERN OF ALWAYS TALKING TO THE TWR AFTER RUNUP AS IS THE NORM WHEN USING RWY 28R. I WAS IN THIS FRAME OF MIND WHEN GIVEN THE TAXI CLRNC TO RWY 23. I INCORRECTLY INTERPED THIS AS A TWR CLRNC TO TAXI ONTO THE RWY. ONCE ON TWR FREQ, I WAS TOLD OF MY ERROR, WHICH I HAD REALIZED MYSELF AT THAT POINT AND I EXPLAINED AND APOLOGIZED THAT I THOUGHT GND HAD CLRED ME ONTO THE RWY. THIS, OF COURSE, WAS INCORRECT NOR COULD GND DO THAT. BUT I HAD INTERPED IT THAT WAY DUE TO THE MIND SET I WAS IN AT THAT PHASE OF THE FLT. I WAS NOT USED TO TALKING TO GND AFTER RUNUP AND WAS IN A TALKING TO THE TWR FOR TKOF PATTERN OF THOUGHT. 1 GA ACFT ON 1 MI FINAL (TOLD TO ME BY THE CTLR ON THE PHONE LATER) HAD TO GO AROUND. I DID OBSERVE IT PASSING HIGH OVERHEAD. I WAS EVENTUALLY CLRED FOR TKOF AND ASKED TO CALL THE TWR UPON LNDG, WHICH I DID. CORRECTIVE ACTIONS: IT WAS MY MISTAKE AND I ALONE AM RESPONSIBLE. I WILL SEEK TRAINING ON MY OWN AND COMPLY WITH WHATEVER FSDO WILL DECIDE. HOWEVER, I WOULD SUGGEST THAT IF GND IS GIVING TAXI INSTRUCTIONS TO A RWY FOR SUCH A SHORT DISTANCE FROM THE RUNUP AREA WHERE YOU WOULD NORMALLY BE TALKING TO THE TWR IT WOULD HELP IF THE SAME TWR TERMINOLOGY (HOLD SHORT) WAS USED, AND EXPECT A READBACK OF THOSE HOLD SHORT INSTRUCTIONS. I BELIEVE THIS WOULD HAVE PREVENTED MY ERROR.

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.