BAE3200 FLT CREW HAS NEAR MISS WITH AN ACFT LNDG ON THE RWY THEY ARE STARTING TO TAXI ACROSS AT UIN; AN UNCTLED AIRFIELD.

Narrative

AS WE LEFT THE GATE AREA; THE FO ANNOUNCED THAT WE WERE TAXIING TO RWY 22 FOR TKOF (DICTATED BY PERFORMANCE DATA AT ACFT TKOF WT). AS WE APCHED RWY 13/31; THE FO ANNOUNCED (VIA CTAF) OUR INTENTIONS TO CROSS RWY 13/31 AND REQUESTED THAT ANY TFC IN THE PATTERN OR AREA TO PLEASE RESPOND. BOTH THE CAPT'S AND FO'S SEATS IN THIS ACFT (AS WITH MANY OTHER ACFT) OFFER EXTREMELY POOR VISIBILITY TO THE OUTSIDE; OPPOSITE THEIR RESPECTIVE SEATS. FOR THIS REASON; COMPANY POLICY DICTATES THAT BOTH THE CAPT AND FO ALWAYS CHK THEIR RESPECTIVE SIDES FOR CONFLICTING TFC (WHILE TAXIING OR INFLT); GND VEHICLES; OBSTRUCTIONS; ETC; AND STATE WHETHER IT IS CLR OR POINT OUT THE CONFLICT TO THE OTHER PLT. I CALLED 'CLR L' AND THE FO CALLED 'CLR R.' WE CONTINUED FOR A VERY SHORT TIME WHEN THE FO YELLED 'STOP!' I IMMEDIATELY APPLIED AGGRESSIVE BRAKING TO STOP OUR FORWARD MOTION AS A PIPER CUB PASSED IN FRONT OF AND ABOVE OUR POS -- FROM R TO L. AT NO TIME DID WE HEAR A POS RPT OR ANY COM FROM THIS ACFT. THE FO IMMEDIATELY ATTEMPTED TO CONTACT THE OTHER ACFT BUT THERE WAS NO RESPONSE. WE THEN CONTINUED ON TO RWY 22 AND TOOK OFF WITHOUT FURTHER INCIDENT. OPS AT UNCTLED AIRFIELDS REQUIRE EXTREME VIGILANCE BY ALL PLTS DURING ANY OP ON THE GND; IN THE TFC PATTERN OR FLYING IN THE VICINITY OF THE AIRFIELD. SINCE THERE IS NO CTLING AUTH AT SUCH ARPTS; WE ALL KNOW THAT THE RESPONSIBILITY FOR SEEING AND AVOIDING OTHER ACFT RESTS ENTIRELY UPON THE PLTS. SINCE ANY RWY CAN BE USED AT ANY ONE TIME; PLTS MAY CHOSE DIFFERENT RWYS DEPENDING ON WIND DIRECTION; TRAINING EXERCISES; PERFORMANCE RESTRS; ETC. THIS FACT SHOULD ALERT EVERY PLT THAT CONFLICTING TFC IS VERY POSSIBLE AND SHOULD BE EXPECTED ANY TIME THEY ARE OPERATING AT AN UNCTLED FIELD. ALSO; IT IS MY OPINION THAT IT SHOULD BE MANDATORY FOR ALL ACFT OPERATING AT AN UNCTLED FIELD TO BE EQUIPPED WITH (AND ITS PLT UTILIZE) A 2-WAY RADIO SO THAT HIS/HER INTENTIONS CAN BE COMMUNICATED TO OTHER TFC IN THE AREA. THE MORE WAYS AVAILABLE TO HELP PLTS IDENT OTHER ACFT OPERATING ON AND AROUND A CONGESTED; UNCTLED ARPT THE BETTER.