Narrative:

Teb 4 departure SID calls for runway heading till 1500 ft, then 280 degrees until 4.6 DME, then climb to 3000 ft. Confused with DME on GPS king 89B and climbed to 3000 ft before DME 4.6. No conflict but controller chastised me for climbing before 4.6 DME. Better understanding of GPS needed.

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Original NASA ASRS Text

Title: PLT OF AN SMA SEL OVERSHOT CLB ALT FIX DUE TO UNFAMILIARITY WITH GPS SATELLITE NAV EQUIP. ATC INFORMED RPTR OF HIS ERROR.

Narrative: TEB 4 DEP SID CALLS FOR RWY HEADING TILL 1500 FT, THEN 280 DEGS UNTIL 4.6 DME, THEN CLB TO 3000 FT. CONFUSED WITH DME ON GPS KING 89B AND CLBED TO 3000 FT BEFORE DME 4.6. NO CONFLICT BUT CTLR CHASTISED ME FOR CLBING BEFORE 4.6 DME. BETTER UNDERSTANDING OF GPS NEEDED.

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.