Narrative:

IFR training flight from ngu to oqu. WX along majority of route was IMC, light to moderate rain/ ice and turbulence. Upon arrival at oqu, PIC requested a VOR-a approach. I briefed the approach which included DME from NAVAID, pvd, to oqu. Arriving from north on assigned altitude of 2000 ft, we broke out of the clouds and saw an airfield with the same runway confign as oqu, runways 5/23 and 16/34. I stated, we seem really high for this approach. At that point, approach switched us to tower and I began a descent to 2000 ft to land at what I thought was oqu. Tower called and stated 'low altitude alert, check your altitude.' I then realized that the VOR was at pvd, not oqu, and climbed back to 2000 ft and requested vectors back around for another VOR-a approach to land at oqu. Recommendation: if pvd was depicted on the DOD approach plate, I was using, I would have realized that we needed to fly past 1 field to get to oqu. Only the NAVAID is depicted on the DOD approach plate. I should have taken a closer look at the en route chart which did depict pvd, and oqu was south of the NAVAID.

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Original NASA ASRS Text

Title: MIL SUPER KING AIR 200 FLT CREW LOSE POSITIONAL AWARENESS AND DSND PRIOR TO FAF ON APCH TO OQU, RECEIVING A PVD TRACON MSAW ALERT THROUGH OQU LCL CTL.

Narrative: IFR TRAINING FLT FROM NGU TO OQU. WX ALONG MAJORITY OF RTE WAS IMC, LIGHT TO MODERATE RAIN/ ICE AND TURB. UPON ARR AT OQU, PIC REQUESTED A VOR-A APCH. I BRIEFED THE APCH WHICH INCLUDED DME FROM NAVAID, PVD, TO OQU. ARRIVING FROM N ON ASSIGNED ALT OF 2000 FT, WE BROKE OUT OF THE CLOUDS AND SAW AN AIRFIELD WITH THE SAME RWY CONFIGN AS OQU, RWYS 5/23 AND 16/34. I STATED, WE SEEM REALLY HIGH FOR THIS APCH. AT THAT POINT, APCH SWITCHED US TO TWR AND I BEGAN A DSCNT TO 2000 FT TO LAND AT WHAT I THOUGHT WAS OQU. TWR CALLED AND STATED 'LOW ALT ALERT, CHK YOUR ALT.' I THEN REALIZED THAT THE VOR WAS AT PVD, NOT OQU, AND CLBED BACK TO 2000 FT AND REQUESTED VECTORS BACK AROUND FOR ANOTHER VOR-A APCH TO LAND AT OQU. RECOMMENDATION: IF PVD WAS DEPICTED ON THE DOD APCH PLATE, I WAS USING, I WOULD HAVE REALIZED THAT WE NEEDED TO FLY PAST 1 FIELD TO GET TO OQU. ONLY THE NAVAID IS DEPICTED ON THE DOD APCH PLATE. I SHOULD HAVE TAKEN A CLOSER LOOK AT THE ENRTE CHART WHICH DID DEPICT PVD, AND OQU WAS S OF THE NAVAID.

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.