ACR MD80 FLC ASKED TO CALL APCH CTL AFTER LNDG. SUPVR ASKED IF FLC OBSERVED EXPERIENCED GS ANOMALIES ON FINAL; WHICH THEY HAD. FLC CONCERNED THAT THEY MAY HAVE DEVIATED FROM ASSIGNED ALT WHEN ON FINAL IN THE QUESTIONED AREA. FLC CONCERNED WITH APCH PROC AND THE COMPLEX ACTIVITY ENCOUNTERED WHILE MAKING THE APCH WHILE CONFIGURING THE ACFT FOR LNDG.

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AFTER LNDG IN LAX (ON RWY 25L) THE FLC OF ACFT #1; FLT XYZ; JUN/TUE/98; WAS ASKED TO CALL THE APCH CTL FACILITY. UPON TALKING TO THE CTLR; HE ASKED IF WE HAD ANY ERRATIC GS INFO WHILE ON THIS APCH. IT SEEMED TO US (THE CREW) THAT WE WERE GETTING ERRATIC MOVEMENT OF THE GS DURING THE OUTER PORTION OF THIS APCH BTWN THE ARNES INTXN (DME 33) AND THE HUNDA INTXN (DME 12.2). THIS WAS THE END OF OUR CONVERSATION WITH THE CTLR. I WOULD LIKE TO ADD: THERE WAS ALSO CONCERN ABOUT THIS GS FROM A KING AIR THAT WAS FOLLOWING US ON THIS APCH. HE ASKED THE CTLR IF 'THE GS WAS UP.' HE ALSO SEEMED TO BE GETTING ERRATIC INFO. THE CTLR STATED THAT IT WAS UP AND ASKED HIM IF HE WAS HAVING ANY PROBS WITH IT. AT ABOUT THIS TIME WE SWITCHED TO TWR AND CLRED TO LAND. ON APCH RWY 25L: WHEN CLRED FOR THIS APCH WE DID FOLLOW THE STEP-DOWN PROCS AS INDICATED ON THE PROFILE OF THE APCH CHART. BTWN FUELR INTXN AND GAATE INTXN; I (THE PF) MAY HAVE DEVIATED DOWN TO 4800 FT. AT GAATE INTXN; I HAD MY CORRECT ALT BACK. EVERY OTHER XING RESTR WAS MADE. UPON REACHING THE GS; IT WAS FOLLOWED ON OR ABOVE FOR LNDG. I FEEL THIS APCH SHOULD BE REVISED SOMEWHAT TO ELIMINATE SOME OF THESE CLOSE IN STEP-DOWNS. WHILE ON THIS APCH WE WERE GIVEN 4 SPD CHANGES. SUPPLEMENTAL INFO FROM ACN 406370: THIS APCH IS VERY DEMANDING AND PRODUCES UNSAFE PROCS. STEP-DOWN AND SPD CHANGES AT SAME TIME ARE DISTRACTING AT A TIME OF CHKLIST AND CONFIGN CHANGES. THIS APCH NEEDS TO BE SIMPLIFIED.