FLC OF CPR LR25 HAS FAILURE OF ALT ALERTER AND CLBS ABOVE ASSIGNED ALT. THIS RESULTS IN LTSS. CTLR VECTORS BOTH ACFT FOR SEPARATION.

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THE PF; FILED AS PIC; CALLED ZLA AS REQUESTED. BETTER CRM ON OUR PART WOULD HAVE PREVENTED THE DEV. I TOOK CTL OF ACFT; CLICKED OFF AUTOPLT AFTER WARNING HIM OF HIS ALT. I SHOULD HAVE TAKEN CTL AT FL283 INSTEAD OF FL285. WE DID SEE ABC ACR AT FIRST ATC RPT. AS CAPTS; WE SOMETIMES TRY NOT TO HURT A COPLT'S FEELINGS. A LESSON LEARNED. GOOD/BETTER CRM COULD HAVE PREVENTED THE DEV. I CERTAINLY OWE AN APOLOGY TO ZLA AND ABC ACR AND THANK THEM FOR THEIR PROFESSIONALISM. NOTE: THE COPLT ALSO TOOK YOKE AND INITIATED CORRECTIVE ACTION ABOUT SAME TIME I DID. WE TALKED LATER AND DISCUSSED HOW WE COULD HAVE DONE BETTER. SUPPLEMENTAL INFO FROM ACN 382279: THE ALT ALERTER WAS NEVER HEARD OR SEEN THROUGHOUT THIS DEV. AFTER ROTATING BOTH THE ALTIMETER AND ALERTER KNOBS; BOTH ALTIMETER AND THE ALT ALERTER BEGAN TO FUNCTION AGAIN NORMALLY. WE WERE ASKED TO CALL ZLA UPON OUR ARR AT SFO TO EXPLAIN THE SIT AND WE COMPLIED IMMEDIATELY UPON LNDG. THE FAILED EQUIP WAS TRACED TO AN ALTIMETER; REQUIRING ADJUSTMENTS TO ALLOW FOR CORRECT ALT AND ALT WARNING SYS FUNCTIONS.