Narrative:

I work as a new CFI at tamiami (tmb) airport. It was my 3RD day of work, when I asked to go along with a local pilot to pick up a second aircraft at merrit island airport (coi). My job was to bring the FBO's aircraft back to base in tmb, while I left this pilot at coi with the other aircraft. We took off from tmb at approximately XA30 heading northwest. The local pilot was PIC flying the aircraft on takeoff and climb (he was also sitting in the left seat). He used runway 31 for takeoff and continued on a climb making small heading changes. Being a local pilot, I trusted that he knew the miami class B airspace well, and that he knew what he was doing. After a climb through 3000 ft without changing frequency from tmb tower to mia approach, I started to pay more attention to where we were by looking at my sectional chart. A little after, at approximately 4500 ft, the left seat pilot finally contacted mia approach saying that he was 20 mi west of mia (which would place him on the west border of the class B airspace). Mia approach said that he was at 18 west of the mia airport and that he had entered the airspace without a clearance. Mia approach told him that he should be 'more careful next time.' they repeated this statement approximately 2-3 times. The rest of the flight was uneventful.

Google
 

Original NASA ASRS Text

Title: PLT ENTERS CLASS B AIRSPACE WITHOUT A CLRNC.

Narrative: I WORK AS A NEW CFI AT TAMIAMI (TMB) ARPT. IT WAS MY 3RD DAY OF WORK, WHEN I ASKED TO GO ALONG WITH A LCL PLT TO PICK UP A SECOND ACFT AT MERRIT ISLAND ARPT (COI). MY JOB WAS TO BRING THE FBO'S ACFT BACK TO BASE IN TMB, WHILE I LEFT THIS PLT AT COI WITH THE OTHER ACFT. WE TOOK OFF FROM TMB AT APPROX XA30 HDG NW. THE LCL PLT WAS PIC FLYING THE ACFT ON TKOF AND CLB (HE WAS ALSO SITTING IN THE L SEAT). HE USED RWY 31 FOR TKOF AND CONTINUED ON A CLB MAKING SMALL HDG CHANGES. BEING A LCL PLT, I TRUSTED THAT HE KNEW THE MIAMI CLASS B AIRSPACE WELL, AND THAT HE KNEW WHAT HE WAS DOING. AFTER A CLB THROUGH 3000 FT WITHOUT CHANGING FREQ FROM TMB TWR TO MIA APCH, I STARTED TO PAY MORE ATTN TO WHERE WE WERE BY LOOKING AT MY SECTIONAL CHART. A LITTLE AFTER, AT APPROX 4500 FT, THE L SEAT PLT FINALLY CONTACTED MIA APCH SAYING THAT HE WAS 20 MI W OF MIA (WHICH WOULD PLACE HIM ON THE W BORDER OF THE CLASS B AIRSPACE). MIA APCH SAID THAT HE WAS AT 18 W OF THE MIA ARPT AND THAT HE HAD ENTERED THE AIRSPACE WITHOUT A CLRNC. MIA APCH TOLD HIM THAT HE SHOULD BE 'MORE CAREFUL NEXT TIME.' THEY REPEATED THIS STATEMENT APPROX 2-3 TIMES. THE REST OF THE FLT WAS UNEVENTFUL.

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.