AN AIRLINE MD82 FLC OVERSHOT THE FINAL APCH COURSE WHILE PERFORMING AN AUTO-APCH IN A HIGH-ANGLE-OFF INTERCEPT IN A STRONG XWIND.

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THERE WAS A STRONG XWIND AT IAD THAT APPARENTLY THE AUTOPLT COULD NOT HANDLE IN A 25 DEG ANGLE OF BANK INTERCEPT AT 060 DEG HDG AT 12 NM FROM RWY 1L. THE AUTOPLT OVERSHOT AS IT ATTEMPTED THE INTERCEPT AND WE CAME WITHIN 1.5 NM FROM RWY 1R TFC WHICH WE KEPT IN SIGHT THE WHOLE TIME. AUTOPLT OVERSHOT INTERCEPT TO ILS RWY 1L AT 3000 FT. WE DISENGAGED THE AUTOPLT TO GET ON THE COURSE FOR RWY 1L. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THIS CAPT ADMITTED THAT HE; PROBABLY SHOULD NOT HAVE TRIED TO USE AN AUTO-INTERCEPT IN THESE CONDITIONS; BUT HE HAD JUST COME OFF THE B767 AND IT PROBABLY WOULD HAVE HANDLED IT. HE SAID; THAT HE ALSO SHOULD HAVE REACTED QUICKER TO THE OVERSHOOT; BUT HE WANTED TO SEE WHAT THE ACFT WOULD DO. THE WX WAS GOOD AND THE PARALLEL TFC WAS IN SIGHT. RESPONDING TO THIS ANALYST'S QUESTIONING; THE RPTR SAID THAT HE KNEW OF THIS AUTOPLT'S LIMITATIONS; BUT HE DECIDED TO SEE WHAT WOULD HAPPEN. HE SAW THE OTHER AIRLINER APCHING RWY 1R THROUGHOUT THE MANEUVER.