Narrative:

Aircraft was assigned a crossing altitude at fix. Captain flying missed altitude by 3000 ft or 3 mi on other side. The second problem was we set up approach to washington national for lda/DME 18, but aircraft was cleared roslyn lda 18. On altitude miss, I contribute it to a mental error. I should not just trust the captain but back him up and keep him advised. On wrong approach set- up, I listened to ATIS, heard roslyn lda 18. Found the first lda 18 chart (lda/DME 1) and set it up. I did not identify the localizer, we had flags. Captain tried to identify with no luck. Advised ATC, they gave us localizer frequency for roslyn lda. We idented and ran the approach. I think the 2 lda's to runway 18 which are approximately 30 degrees off set, should be renamed. One should be changed to lda 'a'. Therefore pilots are less apt to get the wrong approach chart out for lda 18.

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Original NASA ASRS Text

Title: A CPR LTT MISSED A XING RESTR. THEN THE SAME ACFT AND CREW SELECTED THE WRONG APCH TO DCA.

Narrative: ACFT WAS ASSIGNED A XING ALT AT FIX. CAPT FLYING MISSED ALT BY 3000 FT OR 3 MI ON OTHER SIDE. THE SECOND PROB WAS WE SET UP APCH TO WASHINGTON NATIONAL FOR LDA/DME 18, BUT ACFT WAS CLRED ROSLYN LDA 18. ON ALT MISS, I CONTRIBUTE IT TO A MENTAL ERROR. I SHOULD NOT JUST TRUST THE CAPT BUT BACK HIM UP AND KEEP HIM ADVISED. ON WRONG APCH SET- UP, I LISTENED TO ATIS, HEARD ROSLYN LDA 18. FOUND THE FIRST LDA 18 CHART (LDA/DME 1) AND SET IT UP. I DID NOT IDENT THE LOC, WE HAD FLAGS. CAPT TRIED TO IDENT WITH NO LUCK. ADVISED ATC, THEY GAVE US LOC FREQ FOR ROSLYN LDA. WE IDENTED AND RAN THE APCH. I THINK THE 2 LDA'S TO RWY 18 WHICH ARE APPROX 30 DEGS OFF SET, SHOULD BE RENAMED. ONE SHOULD BE CHANGED TO LDA 'A'. THEREFORE PLTS ARE LESS APT TO GET THE WRONG APCH CHART OUT FOR LDA 18.

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.