What was found
AT FL360 RECEIVED EICAS "ALT DISAGREE" CAPT ALT READ 36000, FO 36250, STBY 36600 / REF LP 1247173 ITEM #1(<P>REMOVED AND REPLACED LH UPPER PITOT TUBE ASSY (CA'S PRIMARY) IAW AMM 34-11-01. OPS CHECKED IAW AMM 34-11-00, OPS CHECKS GOOD AT THIS TIME. MCC REQUEST REPLACEMENT OF RH LOWER PITOT TUBE ASSY. SEE LOG PAGE 1247174 ITEM M6 FOR CORRECTIVE ACTION FOR RH UNIT.</P><P><SPAN>LOG PAGE 1247174 ITEM M6: </SPAN>REMOVED AND REPLACED RH LOWER PITOT TUBE ASSY (CAPTS AUX) IAW AMM 34-11-01. OPS CHECKED GOOD AT THIS TIME. LEAK CHECKS GOOD AT THIS TIME (OFF PART: PN <SPAN>0856LU6, SN </SPAN><SPAN>164595).</SPAN></P>)