C182 PLT HAD AIRSPACE INCURSION INTO MHT CLASS C AIRSPACE.

Narrative

IMMEDIATELY AFTER STARTUP; THE FLT BEGAN TO GO SOUR. I ADVANCED PWR TO START THE TAXI AND THE AIRPLANE DIDN'T MOVE. THE NOSEWHEEL HAD BEEN CHOCKED AND I'D LEFT THEM IN. AFTER SHUTDOWN AND ANOTHER STARTUP WAS COMPLETED ABOUT 2 MINS WERE LOST. THIS BEGAN TO CONTRIBUTE TO A RUSHED ATMOSPHERE; DESPITE THERE BEING NO REAL TIME CONSTRAINTS ON THE MISSION. THE TWR ISSUED A TKOF CLRNC TO THE EFFECT OF 'CLRED FOR TKOF; R TURN ON COURSE APPROVED.' GIVEN THE INTENSIVE FLT TRAINING ACTIVITY IN PROGRESS AT THE ARPT; I TOOK THIS TO MEAN TURN R AT EARLIEST -- ASAP; TO ALLOW FOR ADDITIONAL DEPARTING TFC. THEREFORE; SOON AFTER TKOF I BEGAN THE TURN. THE TWR LATER APPROVED A FREQ CHANGE (WITHOUT A HDOF) AND COMMENTED THAT I HADN'T FOLLOWED THE NOISE ABATEMENT PROCS (CLB STRAIGHT OUT TO 1000 FT) THAT WERE IN EFFECT. AT THIS POINT I WAS CONSIDERING WHAT HAD LED TO THIS ERROR; WHILE TRYING TO DECIDE ON THE BEST CRUISE ALT; GIVEN THE CONTINUOUS LIGHT TO MODERATE TURB. WHILE ABSORBED IN THESE CONSIDERATIONS AND TRYING TO KEEP THE AIRPLANE ON A RELATIVELY EVEN KEEL; I NOTICED THE MANCHESTER ARPT NOT VERY FAR OFF THE L WING. I TORE OUT THE SECTIONAL WHILE TRYING TO REMEMBER THE STANDARD DIMENSIONS OF CLASS C AIRSPACE. A GLANCE AT THE CHART SHOWED THAT; SURE ENOUGH; WE WERE 1-2 MI INSIDE THE WEDDING CAKE AT APPROX 3000 FT. AT THIS REALIZATION I BEGAN A TURN TO EXIT THE AIRSPACE ASAP. BEING BASED AT A CLASS C ARPT HAS ITS CONVENIENCES; SUCH AS GUARANTEED HDOFS AND SEAMLESS TRANSITION BTWN TWR AND DEP CTL. THEY WON'T HARDLY LET YOU DEPART VFR WITHOUT FLT FOLLOWING. THIS CAN BREED COMPLACENCY; AND WHEN OPERATING INTO VERY DIFFERENT ARPTS SUCH AS THIS ONE (A CLASS D TWR ADJOINING A CLASS C SURFACE AREA) PITFALLS ABOUND. IN ADDITION; I USUALLY FLY ANY XCOUNTRY TRIPS IFR; ANOTHER SIT IN WHICH ONE NEED NOT GIVE AS MUCH CONSIDERATION TO AIRSPACE. BEING ACCUSTOMED TO NOT HAVING TO WORRY ABOUT AIRSPACE BOUNDARIES SET ME UP FOR THIS INCIDENT.