ATC deleted the zolan 250 KTS restriction prior to mpass on the atl runway 26L cadit 7 mpass transit...

Attributes
ACN	1112250
Time
Date	201308
Local Time Of Day	1801-2400
Place
Locale Reference	ATL.Airport
State Reference	GA
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	Widebody Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Climb
Route In Use	Other Controlled
Flight Plan	IFR
Component
Aircraft Component	FMS/FMC
Person 1
Function	Pilot Not Flying
Experience	Flight Crew Last 90 Days 56 Flight Crew Total 13500 Flight Crew Type 2900
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Track / Heading All Types

Narrative:

Departing atl runway 26L on cadit 7 departure to mpass. We turned the autopilot on at 1;000 ft with profile and navigation selected and began slat retraction 10 K after reaching south speed. After the turn to 300 degrees RNAV to mpass; ATC told us to delete the 250 KT speed restriction at zolan. After deleting the speed the aircraft automation turned the aircraft inside of mpass. ATC advised us that 'in the future deleting the speed restriction at zolan does not mean go direct to zolan.' we indicated that the automation was flying the departure and we showed us .1 mile left of course. He indicated we were well right of course. The FMC logic apparently does not understand flying over a point after deleting a speed. We recommend not deleting a speed until passing mpass. A contributing factor may have been changing the clean up altitude to 1;500 ft instead of 3;000 ft. At 1;500 ft we are closer to the airport and to south+10 much sooner.

Original NASA ASRS Text

Title: ATC deleted the ZOLAN 250 KTS restriction prior to MPASS on the ATL Runway 26L CADIT 7 MPASS transition and after doing so; an air carrier's FMS turned the aircraft precede direct ZOLAN.

Narrative: Departing ATL Runway 26L on CADIT 7 departure to MPASS. We turned the autopilot on at 1;000 FT with Profile and NAV selected and began slat retraction 10 K after reaching S speed. After the turn to 300 degrees RNAV to MPASS; ATC told us to delete the 250 KT speed restriction at ZOLAN. After deleting the speed the aircraft automation turned the aircraft inside of MPASS. ATC advised us that 'in the future deleting the speed restriction at ZOLAN does not mean go direct to ZOLAN.' We indicated that the automation was flying the departure and we showed us .1 mile left of course. He indicated we were well right of course. The FMC logic apparently does not understand flying over a point after deleting a speed. We recommend not deleting a speed until passing MPASS. A contributing factor may have been changing the clean up altitude to 1;500 FT instead of 3;000 FT. At 1;500 FT we are closer to the airport and to S+10 much sooner.

Data retrieved from NASA's ASRS site as of July 2013 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.

ATC deleted the zolan 250 KTS restriction prior to mpass on the atl runway 26L cadit 7 mpass transition and after doing so; an air carrier's FMS turned the aircraft precede direct zolan.