Narrative:

We misread the printed clearance. The printed clearance was mia winco and lower on the paper it read WINCO01 departure. We misread this to say MIA9 winco transition. Both the captain and myself had been doing the same departure (MIA9 winco) for several yrs and we simply focused on the word 'winco.' during taxi out; ATC didn't ask us to confirm the 'first waypoint' like at other airports with RNAV departures. After takeoff we were cleared to the first fix on the RNAV departure. This point was not in the box since the winco 01 departure was not loaded. While we fumbled to load the departure; I flew to the normal turn point (normal for radar vectors; 5000 ft and 5 mi at mia off of runway 8R) and started my turn to an approximately heading of 330 degrees. This caused us to turn 3 mi early before the first fix. We told ATC of our problems loading the box and they gave us a heading to the next point. There were no other problems and there was no other traffic in the area. I believe the departure should be renamed the megan 01 departure (last fix before winco) to eliminate the possibility of this happening to another crew. A good example is lax where the departure is the holtz 07 departure (not the trm 01 departure) so that it is not confused with the lax 05 trm transition. Also; ATC should ask for verification of the first waypoint like they do at other airports. This would have kept us from deviating from our assigned departure.

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Original NASA ASRS Text

Title: AN ACR PLT NOTES THAT MIA PDC CLRNCS DO NOT CLRLY SPECIFY THAT AN LNAV PROC IS PART OF THE DEP CLRNC.

Narrative: WE MISREAD THE PRINTED CLRNC. THE PRINTED CLRNC WAS MIA WINCO AND LOWER ON THE PAPER IT READ WINCO01 DEP. WE MISREAD THIS TO SAY MIA9 WINCO TRANSITION. BOTH THE CAPT AND MYSELF HAD BEEN DOING THE SAME DEP (MIA9 WINCO) FOR SEVERAL YRS AND WE SIMPLY FOCUSED ON THE WORD 'WINCO.' DURING TAXI OUT; ATC DIDN'T ASK US TO CONFIRM THE 'FIRST WAYPOINT' LIKE AT OTHER ARPTS WITH RNAV DEPS. AFTER TKOF WE WERE CLRED TO THE FIRST FIX ON THE RNAV DEP. THIS POINT WAS NOT IN THE BOX SINCE THE WINCO 01 DEP WAS NOT LOADED. WHILE WE FUMBLED TO LOAD THE DEP; I FLEW TO THE NORMAL TURN POINT (NORMAL FOR RADAR VECTORS; 5000 FT AND 5 MI AT MIA OFF OF RWY 8R) AND STARTED MY TURN TO AN APPROX HDG OF 330 DEGS. THIS CAUSED US TO TURN 3 MI EARLY BEFORE THE FIRST FIX. WE TOLD ATC OF OUR PROBS LOADING THE BOX AND THEY GAVE US A HDG TO THE NEXT POINT. THERE WERE NO OTHER PROBS AND THERE WAS NO OTHER TFC IN THE AREA. I BELIEVE THE DEP SHOULD BE RENAMED THE MEGAN 01 DEP (LAST FIX BEFORE WINCO) TO ELIMINATE THE POSSIBILITY OF THIS HAPPENING TO ANOTHER CREW. A GOOD EXAMPLE IS LAX WHERE THE DEP IS THE HOLTZ 07 DEP (NOT THE TRM 01 DEP) SO THAT IT IS NOT CONFUSED WITH THE LAX 05 TRM TRANSITION. ALSO; ATC SHOULD ASK FOR VERIFICATION OF THE FIRST WAYPOINT LIKE THEY DO AT OTHER ARPTS. THIS WOULD HAVE KEPT US FROM DEVIATING FROM OUR ASSIGNED DEP.

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.