MOONEY M20 PLT MADE TOUCH AND GO WITHOUT CLRNC AFTER BEING CLRED TO LAND.

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THIS TRANSGRESSION OCCURRED A COUPLE OF HRS AFTER THE NATIONAL AIRSPACE HAD BEEN CLRED FOR IFR FLTS FROM/WITHIN THE CONTINENTAL UNITED STATES. I FILED AN IFR FLT PLAN FOR A FLT OUT AND BACK TO STINSON FIELD (SSF) FROM TWIN OAKS ARPT (T94) BOTH WITHIN THE CITY LIMITS OF SAN ANTONIO AND IN OR BENEATH THE CLASS C OF SAN ANTONIO INTL (SAT). UPON IDENTING STINSON; I ACCEPTED A VISUAL APCH TO THE FIELD; I RECEIVED AND ACKNOWLEDGED CLRNC TO LAND. AT STINSON RWY 14; I LANDED A LITTLE LONGER AND FASTER THAN I THOUGHT I WAS GOING TO; AND ELECTED TO TURN THE LNDG INTO A TOUCH-AND-GO. THE TWR CTLR ASKED ME TO SAY INTENTIONS; WHEREUPON I DECLARED A TOUCH-AND-GO; WHEREUPON HE SAID THEY REALLY NEEDED TO KNOW THAT AHEAD OF TIME. I SAID 'YEAH; THAT'S TRUE!' I RETURNED IN THE PATTERN FOR A FULL STOP; CLOSED IFR ON THE TXWY BACK TO RWY 14; AND ACCEPTED IFR CLRNC BACK TO T94 ON THE ROLL TO RWY 14. IT WAS ONLY AFTERWARDS THAT I THOUGHT TO MYSELF THAT I HAVE PROBABLY DONE THIS BEFORE AT STINSON; THIS IS A FIELD WHERE SOME INCREDIBLE A AMOUNT (90%?) OF THE TFC IS STUDENT LNDGS; AND THINGS LIKE THIS PROBABLY OCCUR WITH SOME REGULARITY. IT IS PROBABLY WHAT HAPPENS ON EVERY OCCASION THAT I HAVE BEEN ASKED TO 'SAY INTENTIONS' IN THIS SIT. BUT IT DOES EXPLAIN PART OF THE REASON WHY LCL FLT SCHOOLS TYPICALLY REQUIRE FULL STOP LNDGS OUT AT STINSON. I HAVE HAD TO REMIND MYSELF THAT CLRED TO LAND MEANS LAND. THE STOP AND GO; TOUCH AND GO; LOW APCH; MISSED APCH; AND THE 'OPTION' ARE DIFFERENT ANIMALS AND BEING CLRED FOR ALL EXCEPT THE LAST REQUIRES THE SPECIFIED ANIMAL AND NO OTHER. I HAVE CONSULTED SCRIPTURES; OTHERWISE KNOWN AS FAR/AIM; TO CONFIRM THIS. AND; YEA VERILY; IT IS TRUE.