PLT OF A BEECH BONANZA 35 FAILED TO HOLD SHORT OF THE RWY AFTER TAXIING BACK FOR ANOTHER TKOF AFTER LNDG; CAUSING ANOTHER ACFT TO BE SENT AROUND BY THE TWR.

Narrative

I WAS PRACTICING FULL-STOP NIGHT LNDGS AT A TWR-CTLED FIELD. THERE WAS ONE OTHER ACFT IN THE PATTERN. TYPICALLY; AFTER EACH OF MY LNDGS; THE CTLR'S INSTRUCTIONS WERE SOMETHING TO THE EFFECT OF; 'WHEN ABLE; DO A 180 DEG; TAXI TO THE END OF THE RWY AND ADVISE WHEN READY TO GO.' ON ONE OCCASION; AFTER I HAD BACK-TAXIED AND HAD ANNOUNCED THAT I WAS READY TO GO; THE CTLR REPLIED; 'HOLD SHORT.' SHORTLY THEREAFTER HE INSTRUCTED THE OTHER ACFT IN THE PATTERN TO 'GO AROUND.' THEN HE INFORMED ME THAT HE HAD WANTED ME TO 'HOLD SHORT.' IT WAS ONLY THEN THAT I REALIZED THAT I SHOULD HAVE BEEN CLR OF THE ACTIVE RWY RATHER THAN HOLDING IN POS. THE INSTRUCTIONS TO 'HOLD SHORT' ARE UNAMBIGUOUS; BUT I NONETHELESS MISINTERPRETED THEM; POSSIBLY BECAUSE I HAD BEEN PERFORMING A ROUTINE MANEUVER REPEATEDLY AND HEARD WHAT I HAD EXPECTED TO HEAR RATHER THAN WHAT WAS ACTUALLY SAID. A CONTRIBUTING FACTOR WAS PROBABLY MY LOW TIME (LESS THAN 44 HRS TOTAL AND LESS THAN 0.5 HRS OF THAT AT NIGHT) IN THE ACFT I WAS FLYING AND LACK OF RECENT NIGHT EXPERIENCE IN GENERAL (LESS THAN 0.5 HRS IN THE LAST 6 MONTHS). I WAS VERY INTENT ON PROPERLY EXECUTING ACFT SYS CHKS. GIVEN MY LOW TIME IN THE ACFT; I SHOULD HAVE HAD THE FORESIGHT TO BRING ALONG A FLT INSTRUCTOR. HAD I DONE SO; I PROBABLY WOULD NOT BE SUBMITTING THIS FORM. AS A FINAL NOTE; IT WOULD HAVE BEEN PERHAPS MORE HELPFUL HAD THE CTLR SAID SOMETHING MORE EXPLICIT LIKE; 'TAXI CLR OF THE ACTIVE;' NONETHELESS; HIS INSTRUCTIONS TO 'HOLD SHORT' SHOULD HAVE BEEN INTERPRETED CORRECTLY BY ME.