STUCK MIKE CREATES POINTS OF INTEREST FOR PLT AND CTLR ALIKE.

Narrative

WHILE TAXIING MY ACFT TO THE ACTIVE RWY AT LGB; ALL TAXI AND RUNUP PROCS WERE FINE UNTIL I NOTICED I COULD NOT HEAR THE TWR CTLR ON MY SPEAKER AND WAS WEARING A HEADSET. I COULD HAVE HAD A DEAD RADIO OR SPEAKER WHEN; IN FACT; I HAD A STUCK MIKE ON THE CTL WHEEL. I EVENTUALLY GOT THE MIKE SWITCH DISENGAGED AND ELECTED TO DEPART NOT THINKING ABOUT WHETHER OR NOT THE PROB WOULD ARISE AGAIN. AFTER DEPARTING LGB; I HEADED UP TOWARDS THE BUR ARSA AND TRIED CALLING THEM (APCH) FOR ADVISORIES AND EVENTUALLY GOT A STUCK MIKE AGAIN. AT THAT TIME; I KNEW I WAS IN TROUBLE AND WITHOUT TYING UP THE FREQS; ELECTED TO TURN OFF MY RADIOS. I MADE A 180 DEG TURN AND RETURNED BACK TO LGB; AND CALLED BOTH THE TWR AND BUR APCH CTLRS TO INFORM THEM OF MY SIT AND THAT I WAS ON THE GND. I ALSO SQUAWKED THE RADIO FAILURE CODE 7600 ON MY XPONDER TO INFORM CTLRS OF MY SIT. NO OTHER INCIDENTS TOOK PLACE THIS FLT. I HAVE RECEIVED INSTRUCTION BY THE RENTAL AGENCY THAT I FLY WITH ON EMER PROCS. I HAVE ALSO BEEN COUNSELED ON NOT USING PROFANITY WHEN HAVING RADIO PROBS. LGB TWR STATED I HAD A STUCK MIKE FOR OVER 4 MINS. ACFT WAS AN SMA BASED AT FBO IN LGB.