ACR LTT BEGAN TKOF WHILE SMA BACKTAXIING ON RWY.

Narrative

THE EVENT HAPPENED ON THE GND AT BHB. THE AIRPLANE WAS AN SMA (I WAS TAXIING). I HAD A PLANE LOAD OF PAX AND WAS READY TO BACKTAXI DOWN THE ACTIVE RWY FOR TKOF. THE RWY 22 AT BHB HAS A HUMP IN THE MIDDLE OF ITS 5000' RWY AND ACFT AT ONE END CAN'T SEE ANY ACFT ON THE RWY IF THEY ARE AT THE OTHER END. I TAXIED TO THE HOLD SHORT LINES AND XMITTED 'BAR HARBOR TFC; NXXXX WOULD LIKE TO BACK TAXI ON RWY 22; ANY TFC PLEASE ADVISE.' I THEN WAITED 5 SECS AND THEN TAXIED ONTO THE RWY. I THEN XMITTED 'BAR HARBOR TFC; N BACK TAXI ON 22.' I WENT APPROX 50' (ABOUT 5 SECS) WHEN ANOTHER PLT IN THE AIR (WHO KNOWS ME) XMITTED; '(MY NAME) GET OFF THE RWY; ACR AIRLINES IS TAKING OFF.' I QUICKLY TAXIED OFF THE RWY AND WAS APPROX 100' OFF THE RWY WHEN I HEARD; 'ACR; WE'LL ABORT.' THE AIRLINER; AN LTT; ABORTED ITS TKOF; TAXIED DOWN TO THE END OF THE RWY; TURNED AROUND ON RWY 4 AND CALLED ITS TKOF XMISSIONS OVER UNICOM AND DEPARTED. I TAXIED TO RWY 22 VIA RWY 35 AND THEN DEPARTED. BHB HAS NO TXWYS AND YOU MUST BACK TAXI ON THE ACTIVE OR CROSS THE ACTIVE I TAXI ON ANOTHER RWY. I FEEL THIS COULD BE A DANGEROUS SITUATION SOMETIME. I WOULD HAVE CONTINUED ON THE ACTIVE AND INTO THE AIRLINER POSSIBLY IF MY FRIEND HADN'T TOLD ME TO GET OFF THE RWY.