Narrative:

Khto hto V308 orw. After receiving this clearance departing runway 28 at khto; I engaged the autoplt at 1000 ft and long range navigation; the FMS logic anticipated the turn to join V308. I estimate we didn't overfly the VOR by 1.5 mi. Upon checking with new york departure; the controller asked why we didn't overfly hto. We replied that we were in a turn to intercept V308 after what we thought was overflying the VOR. New york departure tells us to fly south; that we should have overflown the VOR. So we turn southward toward the VOR. New york departure inquires about our heading. We replied 240 degrees direct hto. New york departure said they wanted us on a 180 degree heading. We were never told 180 degree heading. No traffic issues were encountered during this event. I am bringing this up to your attention to remind controllers that FMS equipped aircraft do not necessarily overfly waypoints unless specifically instructed to. Supplemental information from acn 705216: ATC instructed us to turn to a south heading. The captain turned south and while I was inside the airplane I noticed he continued the turn to the hto VOR. I asked the captain if we were instructed to go to hto and he said yes. I felt he was incorrect and about the same time ATC asked us our heading and we were on a 240 degree heading. She said we should have been on a 180 degree heading.

Related reports:

Google
 

Original NASA ASRS Text

Title: CITATION CE560XL FLT CREW HAS A TRACK HDG DEV DURING DEP FROM HTO.

Narrative: KHTO HTO V308 ORW. AFTER RECEIVING THIS CLRNC DEPARTING RWY 28 AT KHTO; I ENGAGED THE AUTOPLT AT 1000 FT AND LONG RANGE NAV; THE FMS LOGIC ANTICIPATED THE TURN TO JOIN V308. I ESTIMATE WE DIDN'T OVERFLY THE VOR BY 1.5 MI. UPON CHKING WITH NEW YORK DEP; THE CTLR ASKED WHY WE DIDN'T OVERFLY HTO. WE REPLIED THAT WE WERE IN A TURN TO INTERCEPT V308 AFTER WHAT WE THOUGHT WAS OVERFLYING THE VOR. NEW YORK DEP TELLS US TO FLY S; THAT WE SHOULD HAVE OVERFLOWN THE VOR. SO WE TURN SOUTHWARD TOWARD THE VOR. NEW YORK DEP INQUIRES ABOUT OUR HDG. WE REPLIED 240 DEGS DIRECT HTO. NEW YORK DEP SAID THEY WANTED US ON A 180 DEG HDG. WE WERE NEVER TOLD 180 DEG HDG. NO TFC ISSUES WERE ENCOUNTERED DURING THIS EVENT. I AM BRINGING THIS UP TO YOUR ATTN TO REMIND CTLRS THAT FMS EQUIPPED ACFT DO NOT NECESSARILY OVERFLY WAYPOINTS UNLESS SPECIFICALLY INSTRUCTED TO. SUPPLEMENTAL INFO FROM ACN 705216: ATC INSTRUCTED US TO TURN TO A S HDG. THE CAPT TURNED S AND WHILE I WAS INSIDE THE AIRPLANE I NOTICED HE CONTINUED THE TURN TO THE HTO VOR. I ASKED THE CAPT IF WE WERE INSTRUCTED TO GO TO HTO AND HE SAID YES. I FELT HE WAS INCORRECT AND ABOUT THE SAME TIME ATC ASKED US OUR HDG AND WE WERE ON A 240 DEG HDG. SHE SAID WE SHOULD HAVE BEEN ON A 180 DEG HDG.

Data retrieved from NASA's ASRS site as of January 2009 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.