Narrative:

Upon passing the okk VOR northbound I proceeded direct oxi VOR. Both the PNF and myself understood this to be our clearance. At the same time we received a frequency change which included a reminder that we were cleared via the okk one arrival. We then both checked the arrival chart and realized that we were not to proceed direct oxi VOR but a northbound radial outbound. As we contacted the next center frequency we were turning to the outbound radial. Since the MDA was hot we apparently violated the airspace with a potential conflict. Upon landing in ord I called the center supervisor as requested and explained the conflict (incident). He told me there had not been a conflict although 2 F-16's were asked to level off 1000 ft below us. I believe the low time in type and turbojet, period, and inexperience with FMS and GPS navigation system of the crew to be a contributing factor. Also the fact that we usually get cleared okk direct oxi conditioned us to expect it this time.

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Original NASA ASRS Text

Title: FLC OF A CANADAIR REGIONAL JET, CL65, FAILED TO FOLLOW THE PUBLISHED STAR ARR PROC RESULTING IN ATC INTERVENTION TO TURN THEM BACK ON COURSE AND DEPART A 'HOT' MIL OP AREA (MOA).

Narrative: UPON PASSING THE OKK VOR NBOUND I PROCEEDED DIRECT OXI VOR. BOTH THE PNF AND MYSELF UNDERSTOOD THIS TO BE OUR CLRNC. AT THE SAME TIME WE RECEIVED A FREQ CHANGE WHICH INCLUDED A REMINDER THAT WE WERE CLRED VIA THE OKK ONE ARR. WE THEN BOTH CHKED THE ARR CHART AND REALIZED THAT WE WERE NOT TO PROCEED DIRECT OXI VOR BUT A NBOUND RADIAL OUTBOUND. AS WE CONTACTED THE NEXT CTR FREQ WE WERE TURNING TO THE OUTBOUND RADIAL. SINCE THE MDA WAS HOT WE APPARENTLY VIOLATED THE AIRSPACE WITH A POTENTIAL CONFLICT. UPON LNDG IN ORD I CALLED THE CTR SUPVR AS REQUESTED AND EXPLAINED THE CONFLICT (INCIDENT). HE TOLD ME THERE HAD NOT BEEN A CONFLICT ALTHOUGH 2 F-16'S WERE ASKED TO LEVEL OFF 1000 FT BELOW US. I BELIEVE THE LOW TIME IN TYPE AND TURBOJET, PERIOD, AND INEXPERIENCE WITH FMS AND GPS NAV SYS OF THE CREW TO BE A CONTRIBUTING FACTOR. ALSO THE FACT THAT WE USUALLY GET CLRED OKK DIRECT OXI CONDITIONED US TO EXPECT IT THIS TIME.

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.