What was found
AFTER TAKEOFF THE ALTITUDE WINDOW CHANGED OFF THE PRESELECTED ALTITUDE. WHEN TRYING TO CHANGE THE ALTITUDE BACK THE SELECTOR KNOB WOULD NOT WORK. A SLIGHT PUSH/PULL OF THE KNOB AND WE COULD CHANGE THE ALTITUDE AGAIN. ADDITIONALLY THE BARO BUG ALTITUDE ON DID NOT GIVE AN AURAL MINS. CALL OUT. GROUNDED - YES. CYCLED POWER TO MCP NO HELP ALT SELECTOR & WINDOW STILL INTERMITTENT. REMOVED & REPLACED MCP REF AMM 22-11-34-400/801. INSTALLATION TEST PASSED. ACCOMP LLM TESTS LRU REPLACEMENT TEST FOR MCP REF AMM 22-11-34/501 & LAND VERIFY TEST REF AMM 22-11-00/201 GRP 49 ALL TESTS PASSED.