Narrative:

On a descent into bwi from 18000 ft we were given a crossing clearance of 12000 ft at troyz. The captain heard trish, I heard troyz. We each entered this altitude in the FMS's (respectively). Just after entering these altitudes I was occupied by an in-range call to company operations. Normally this is a quick call, but I was distracted for several mins because of a bad 'connection' with company operations. I never crosschecked with the captain's FMS to see if our FMS's were set the same. During my company operations call, we were handed off from ny approach to baltimore approach. I caught only part of the handoff instructions and assumed the captain handled the #1 communication while I was FLIP-flopping between #1 and #2 VHF's. Then baltimore told us that 'new york approach said we missed a crossing restr at 12000 ft.' subsequently, we realized the error between 'trish' and 'troyz.' I think we passed over troyz at about 13000 ft. In any case, ny never said anything to us in the descent that would have led us to believe that we would not achieve our crossing restr. The call from baltimore approach advising us of ny approach's comment on the crossing restr caught us completely by surprise. The remainder of the flight was uneventful. This was the first leg of our trip sequence (4 day sequence). I was already tired from getting up at XA00 for my commute from mco to bos the same day. Trish and troyz are similar sounding names. I recommend they be moved away from each other.

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Original NASA ASRS Text

Title: ERJ135 CREW MISS XING RESTR BECAUSE OF IMPROPER LOADING OF FLT PLAN INTO THE FMS.

Narrative: ON A DSCNT INTO BWI FROM 18000 FT WE WERE GIVEN A XING CLRNC OF 12000 FT AT TROYZ. THE CAPT HEARD TRISH, I HEARD TROYZ. WE EACH ENTERED THIS ALT IN THE FMS'S (RESPECTIVELY). JUST AFTER ENTERING THESE ALTS I WAS OCCUPIED BY AN IN-RANGE CALL TO COMPANY OPS. NORMALLY THIS IS A QUICK CALL, BUT I WAS DISTRACTED FOR SEVERAL MINS BECAUSE OF A BAD 'CONNECTION' WITH COMPANY OPS. I NEVER XCHKED WITH THE CAPT'S FMS TO SEE IF OUR FMS'S WERE SET THE SAME. DURING MY COMPANY OPS CALL, WE WERE HANDED OFF FROM NY APCH TO BALTIMORE APCH. I CAUGHT ONLY PART OF THE HDOF INSTRUCTIONS AND ASSUMED THE CAPT HANDLED THE #1 COM WHILE I WAS FLIP-FLOPPING BTWN #1 AND #2 VHF'S. THEN BALTIMORE TOLD US THAT 'NEW YORK APCH SAID WE MISSED A XING RESTR AT 12000 FT.' SUBSEQUENTLY, WE REALIZED THE ERROR BTWN 'TRISH' AND 'TROYZ.' I THINK WE PASSED OVER TROYZ AT ABOUT 13000 FT. IN ANY CASE, NY NEVER SAID ANYTHING TO US IN THE DSCNT THAT WOULD HAVE LED US TO BELIEVE THAT WE WOULD NOT ACHIEVE OUR XING RESTR. THE CALL FROM BALTIMORE APCH ADVISING US OF NY APCH'S COMMENT ON THE XING RESTR CAUGHT US COMPLETELY BY SURPRISE. THE REMAINDER OF THE FLT WAS UNEVENTFUL. THIS WAS THE FIRST LEG OF OUR TRIP SEQUENCE (4 DAY SEQUENCE). I WAS ALREADY TIRED FROM GETTING UP AT XA00 FOR MY COMMUTE FROM MCO TO BOS THE SAME DAY. TRISH AND TROYZ ARE SIMILAR SOUNDING NAMES. I RECOMMEND THEY BE MOVED AWAY FROM EACH OTHER.

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.