B737-800
Air Traffic Control Fully Certified
Situational Awareness; Other / Unknown
ATC Issue All Types; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued New Clearance
Human Factors; ATC Equipment / Nav Facility / Buildings; Procedure
A B737-800 departed LAX South Complex on LAXX Departure Procedure. A B737-700 departed North Complex on LOOP Departure Procedure. The -800 checked on at shoreline. As the -700 was checking on; I noticed that the -800 was still on what appeared to be the 250 departure heading; not the required 220 heading at the SMO 160R to separate this aircraft from the North Complex which is on a 250 heading. As soon as the -700 stopped its transmission; I issued a southbound turn to the -800 to effect separation. I am probably going to start issuing all of these non-RNAV departure an initial heading as soon as I talk to them. This situation of the pilot not turning to the required heading is happening very often and I'm not sure; but I think that 'Fusion' makes it a little harder to discern when this turn is started. Aircraft are not turning when they are supposed to and so the controller needs to correct the situation.
SCT Controller described a developing conflict with LAX departures when one aircraft failed to turn as required; the reporter listing 'Fusion' RADAR as one contributing factor.