Narrative:

Flight plan had us filed for the LAXX6 non-RNAV departure. Arrived at plane and were dealing with MEL complete thrust management system inoperative and no clearance on file. Called company to re-file clearance; while plane was being closed up for departure; first officer obtained clearance over radio; and the departure had been changed to the HOLTZ9. Still discussing the MEL item; we accepted an RNAV departure in a non-pegasus airplane out of lax. On departure; tower informed us that we had drifted 1/2 mile north of runway and gave us a 220 heading. At point I realized that a crew briefing note said not to accept an RNAV departure out of lax in a non-pegasus aircraft. Called lax tower and they concurred there have been past problems with the departure depending on aircraft avionic installed.I have several suggestion: 1. Aircraft should not be dispatched from a major maintenance base with an inoperative thrust management system. 2. Dispatch should be aware of aircraft limitations and not file an unacceptable departure. 3. Many new first officers on the property take the time to review with them all revised clearances and crew briefing pages each time a revised clearance is assigned. Possibly add note in preflight paperwork concerning non-pegasus aircraft departing out of lax as an extra layer to remind captains not to accept RNAV departures.

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Original NASA ASRS Text

Title: A non-Pegasus B757 departed on the LAX HOLTZ9 RNAV Departure and had a track deviation detected by ATC; which also alerted to the crew to the Dispatch filing error.

Narrative: Flight plan had us filed for the LAXX6 non-RNAV departure. Arrived at plane and were dealing with MEL Complete thrust management system inoperative and no clearance on file. Called company to re-file clearance; while plane was being closed up for departure; First Officer obtained clearance over radio; and the departure had been changed to the HOLTZ9. Still discussing the MEL item; we accepted an RNAV departure in a non-Pegasus airplane out of LAX. On departure; Tower informed us that we had drifted 1/2 mile north of runway and gave us a 220 heading. At point I realized that a crew briefing note said not to accept an RNAV departure out of LAX in a non-Pegasus aircraft. Called LAX Tower and they concurred there have been past problems with the departure depending on aircraft avionic installed.I have several suggestion: 1. Aircraft should not be dispatched from a major Maintenance Base with an inoperative thrust management system. 2. Dispatch should be aware of aircraft limitations and not file an unacceptable departure. 3. Many new First Officers on the property take the time to review with them all revised clearances and crew briefing pages each time a revised clearance is assigned. Possibly add note in preflight paperwork concerning non-Pegasus aircraft departing out of LAX as an extra layer to remind Captains not to accept RNAV departures.

Data retrieved from NASA's ASRS site 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.