Narrative:

While on the localizer 35 approach to owd, ATC turned us to 020 degrees for a localizer intercept. A combination of a close-in turn, winds of 240 degrees at 40 KTS and crew inattn while finishing the checklist resulted in flying through the localizer. ATC brought this to our attention so the pilot uncoupled the autoplt and while turning left to intercept the localizer inadvertently descended from 2000' MSL (initial approach altitude) to 1600' MSL before recovering. A missed approach was executed. On the second attempt the approach went smoothly except that the ATIS WX of 400' and 1 mi was very optimistic. No ground contact was observed while at the MDA and another missed approach was initiated. We elected to go to bos but, while being vectored for the ILS 04R approach, we were informed that we would have to hold for 1 hour. Due to fuel considerations we elected to divert to bed only to discover that the bed approach plates had been accidentally replaced with new bedford approach plates. ATC was kind enough to supply the necessary bed approach information and an uneventful approach and landing ensued. It retrospect, this was a most unusual flight for a professional crew that has flown together for many yrs. Substandard performance resulted form a combination of intermittent nighttime sleep, an X am wake-up, marginal WX at our first 2 stops, and the lulling relaxation of a 1 hour IMC leg. Needless to say, the last 30 mins of the flight were eventful and hectic. Yet another lesson learned!

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Original NASA ASRS Text

Title: CPR SMT HELICOPTER TRACK DEVIATION AND ALT DEVIATION ON THE SAME IAP ILS APCH INTO OWD.

Narrative: WHILE ON THE LOC 35 APCH TO OWD, ATC TURNED US TO 020 DEGS FOR A LOC INTERCEPT. A COMBINATION OF A CLOSE-IN TURN, WINDS OF 240 DEGS AT 40 KTS AND CREW INATTN WHILE FINISHING THE CHKLIST RESULTED IN FLYING THROUGH THE LOC. ATC BROUGHT THIS TO OUR ATTN SO THE PLT UNCOUPLED THE AUTOPLT AND WHILE TURNING LEFT TO INTERCEPT THE LOC INADVERTENTLY DSNDED FROM 2000' MSL (INITIAL APCH ALT) TO 1600' MSL BEFORE RECOVERING. A MISSED APCH WAS EXECUTED. ON THE SECOND ATTEMPT THE APCH WENT SMOOTHLY EXCEPT THAT THE ATIS WX OF 400' AND 1 MI WAS VERY OPTIMISTIC. NO GND CONTACT WAS OBSERVED WHILE AT THE MDA AND ANOTHER MISSED APCH WAS INITIATED. WE ELECTED TO GO TO BOS BUT, WHILE BEING VECTORED FOR THE ILS 04R APCH, WE WERE INFORMED THAT WE WOULD HAVE TO HOLD FOR 1 HR. DUE TO FUEL CONSIDERATIONS WE ELECTED TO DIVERT TO BED ONLY TO DISCOVER THAT THE BED APCH PLATES HAD BEEN ACCIDENTALLY REPLACED WITH NEW BEDFORD APCH PLATES. ATC WAS KIND ENOUGH TO SUPPLY THE NECESSARY BED APCH INFO AND AN UNEVENTFUL APCH AND LNDG ENSUED. IT RETROSPECT, THIS WAS A MOST UNUSUAL FLT FOR A PROFESSIONAL CREW THAT HAS FLOWN TOGETHER FOR MANY YRS. SUBSTANDARD PERFORMANCE RESULTED FORM A COMBINATION OF INTERMITTENT NIGHTTIME SLEEP, AN X AM WAKE-UP, MARGINAL WX AT OUR FIRST 2 STOPS, AND THE LULLING RELAXATION OF A 1 HR IMC LEG. NEEDLESS TO SAY, THE LAST 30 MINS OF THE FLT WERE EVENTFUL AND HECTIC. YET ANOTHER LESSON LEARNED!

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.