Narrative:

Mia tower and approach control. Location: off runway 27R mia. Uneventful taxi out on S80 with a newly placarded apa load control valve (APU air inoperative). First officer was flying the leg. Burning rubber smell occurred in the cockpit beginning at about V1. By the time we had rotated and were airborne, the smell was intense such that the first officer and I both agreed it was significant yet source was undetermined. I quickly rang for and consulted with the flight attendants. They confirmed the cabin had a pervading smell of fire. One idented it as electrical fire smell. No cockpit gauges or annunciators showed any discrepancy. However, I made the decision that we would return for immediate landing at mia. I advised tower/approach of our intent and were shortly offered landing on the nearest -- runway 12. Quickly advised the passenger via PA or our plan. First officer did an excellent job of landing on short notice downwind at 136000 pounds -- 6000 pounds over certified landing weight -- with no adverse effects or problems. Crash fire rescue equipment equipment met the aircraft as I cleared the runway. Fire commander checked and verified no external signs of smoke, fire, or adverse conditions. We taxied on to the gate with no further incident. Great cooperation and coordination with my first officer, flight attendants, passenger, ATC, mia crash fire rescue equipment crew -- all of which turned this sudden emergency into no big deal. Thanks to all who assisted.

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Original NASA ASRS Text

Title: STRONG ODOR OF BURNING RUBBER ON TKOF CAUSED ACFT TO RETURN TO DEP ARPT.

Narrative: MIA TWR AND APCH CTL. LOCATION: OFF RWY 27R MIA. UNEVENTFUL TAXI OUT ON S80 WITH A NEWLY PLACARDED APA LOAD CTL VALVE (APU AIR INOP). FO WAS FLYING THE LEG. BURNING RUBBER SMELL OCCURRED IN THE COCKPIT BEGINNING AT ABOUT V1. BY THE TIME WE HAD ROTATED AND WERE AIRBORNE, THE SMELL WAS INTENSE SUCH THAT THE FO AND I BOTH AGREED IT WAS SIGNIFICANT YET SOURCE WAS UNDETERMINED. I QUICKLY RANG FOR AND CONSULTED WITH THE FLT ATTENDANTS. THEY CONFIRMED THE CABIN HAD A PERVADING SMELL OF FIRE. ONE IDENTED IT AS ELECTRICAL FIRE SMELL. NO COCKPIT GAUGES OR ANNUNCIATORS SHOWED ANY DISCREPANCY. HOWEVER, I MADE THE DECISION THAT WE WOULD RETURN FOR IMMEDIATE LNDG AT MIA. I ADVISED TWR/APCH OF OUR INTENT AND WERE SHORTLY OFFERED LNDG ON THE NEAREST -- RWY 12. QUICKLY ADVISED THE PAX VIA PA OR OUR PLAN. FO DID AN EXCELLENT JOB OF LNDG ON SHORT NOTICE DOWNWIND AT 136000 LBS -- 6000 LBS OVER CERTIFIED LNDG WT -- WITH NO ADVERSE EFFECTS OR PROBS. CFR EQUIP MET THE ACFT AS I CLRED THE RWY. FIRE COMMANDER CHKED AND VERIFIED NO EXTERNAL SIGNS OF SMOKE, FIRE, OR ADVERSE CONDITIONS. WE TAXIED ON TO THE GATE WITH NO FURTHER INCIDENT. GREAT COOPERATION AND COORD WITH MY FO, FLT ATTENDANTS, PAX, ATC, MIA CFR CREW -- ALL OF WHICH TURNED THIS SUDDEN EMER INTO NO BIG DEAL. THANKS TO ALL WHO ASSISTED.

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.