What was found
FLIGHT CREW REPORTED THE PILOTS ALTIMETER AND ALTITUDE ALERTER BLANKED OUT DURING CLIMBOUT IN HEAVY RAIN. THE ADC WAS RESEATED IN THE RACK AND THE NR 1 PITOT/STATIC SYSTEM WAS DRAINED. THE PILOTS ALTIMETER SYSTEM WAS TESTED AND INSPECTED AND FOUND TO COMPLY WITH AND REMAIN RVSM COMPLIANT. THERE HAVE BEEN NO PRIOR REPORTS OF PROBLEMS WITH THIS AIRCRAFT. (NOTE: CONCURRENT REPORT ON THIS AC REGARDING THE PILOTS ALTIMETER INDICATOR). (K)