What was found
INVESTIGATED PILOT REPORT OF RT (COPILOT'S) SIDE INSTRUMENT PANEL CD AHS REVERSIONARY SWITCH STUCK, UNABLE TO SWITCH FUNCTIONS. VERIFIED PN 4882-579 SWITCH ASSY. STUCK IN RECESSED POSITION. FOUND SWITCH ASSY. LOCKED IN PLACE BY EXCESSIVE LENGTH CTR MOUNTING SCREW ATTACHING RT INSTRUMENT PANEL CD INBD (MFD) AFD-3010 DISPLAY UNIT'S IMT-3010 MOUNTING RACK (REF IPC 31-10-05-60H FIG 4, ITEMS 275, 280) JAMMING INTO SWITCH ASSY. BELOW. REQUIRED CUTTING APART SWITCH ASSY FOR REMOVAL. REPLACED AHS REVERSIONARY SWITCH ASSY AND IMT-3010 MOUNTING SCREW WITH CORRECT LENGTH SCREW, OPS CHECK OK. TRANSIENT ACFT, HISTORY UNKNOWN. RECOMMEND MFG INCORPORATE A NOTE IN THE APPLICABLE PORTIONS OF THE ACFT MM REGARDING ADHERING TO CORRECT INSTRUMENT MOUNTING HARDWARE USE.