Narrative:

On arrival into lax, we were told to proceed direct to snrkl intersection on the mitts 1 arrival, cross snrkl 12000 ft or above, cleared to descend via the mitts 1. We were then told to slow to 250 KTS. Approximately 1 min prior to crossing mitts intersection, I wanted to inform ATC that we would be high at mitts due to the speed reduction, resulting in being above the VNAV path. Due to radio congestion, I did not get the call in until we were crossing mitts. The restr at mitts is less than or equal to 11000 ft, greater than or equal to 10000 ft. We crossed at 12000 ft. It can be difficult to slow and descend on some arrs, and even more difficult to relay this to ATC during heavy traffic.

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Original NASA ASRS Text

Title: A B757 FO RPTED THAT SCT REQUESTED A DSCNT AT SUCH A SLOW AIRSPD THAT IT WAS NOT POSSIBLE TO MAKE THE XING RESTR.

Narrative: ON ARR INTO LAX, WE WERE TOLD TO PROCEED DIRECT TO SNRKL INTXN ON THE MITTS 1 ARR, CROSS SNRKL 12000 FT OR ABOVE, CLRED TO DSND VIA THE MITTS 1. WE WERE THEN TOLD TO SLOW TO 250 KTS. APPROX 1 MIN PRIOR TO XING MITTS INTXN, I WANTED TO INFORM ATC THAT WE WOULD BE HIGH AT MITTS DUE TO THE SPD REDUCTION, RESULTING IN BEING ABOVE THE VNAV PATH. DUE TO RADIO CONGESTION, I DID NOT GET THE CALL IN UNTIL WE WERE XING MITTS. THE RESTR AT MITTS IS LESS THAN OR EQUAL TO 11000 FT, GREATER THAN OR EQUAL TO 10000 FT. WE CROSSED AT 12000 FT. IT CAN BE DIFFICULT TO SLOW AND DSND ON SOME ARRS, AND EVEN MORE DIFFICULT TO RELAY THIS TO ATC DURING HVY TFC.

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.