What was found
SUPPLEMENTAL TWO ON APPROACH IN ICING CONDITIONS STAB A/ICE FAIL CAUTION MESSAGE FOLLOWED BY AN ICE COND-A/I INOP WARNING MESSAGE ON EICAS. "TRANSFERRED TO NRWC 933-ORD-03489". C/A-TROUBLE SHOT REF. FIM 30-12-00-810-805-A, ACCOMPLISHED VERTICAL-STAB. A/I MONITORING TUBES ADJUSTMENT/TEST IAW MM 30-12-11-700-801-A. VERIFIED THAT HOSE ASSY. WAS LEAKING. REMOVED AND REPLACED VERTICAL-STAB. A/I MONITORING TUBES HOSE ASSY. IAW MM 30-12-11. OPS CHECK GOOD IAW AMM 30-00-00. PERFORMED OPERATIONAL CHECK OF ANTI-ICE SYSTEM IAW AMM 30-00-00 OPS TEST GOOD.