Narrative:

En route from lihue, hi, to honolulu we were cleared to 15000 ft. We were following slower traffic which we had on our TCASII. As we approached our cruise altitude we were told to expect to slow up to 250 KTS at booke intersection. I was looking outside for the traffic and flew through 15000 ft to 15600 ft. At about the same time we were given 8000 ft and were asked by the controller to say our altitude so that he could verify his equipment. By now we were at 14600 ft on our descent.

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Original NASA ASRS Text

Title: RPTED 600 FT ALTDEV BY DC9 CLBING TO 15000 FT.

Narrative: ENRTE FROM LIHUE, HI, TO HONOLULU WE WERE CLRED TO 15000 FT. WE WERE FOLLOWING SLOWER TFC WHICH WE HAD ON OUR TCASII. AS WE APCHED OUR CRUISE ALT WE WERE TOLD TO EXPECT TO SLOW UP TO 250 KTS AT BOOKE INTXN. I WAS LOOKING OUTSIDE FOR THE TFC AND FLEW THROUGH 15000 FT TO 15600 FT. AT ABOUT THE SAME TIME WE WERE GIVEN 8000 FT AND WERE ASKED BY THE CTLR TO SAY OUR ALT SO THAT HE COULD VERIFY HIS EQUIP. BY NOW WE WERE AT 14600 FT ON OUR DSCNT.

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.