What was found
TAIL SKID DISAGREE LIGHT ILLUMINATED WHEN GEAR HANDLE PLACED IN UP POSITION. LEFT MAIN GEAR INDICATED DOWN AND LOCKED WHEN GEAR HANDLE PLACED IN OFF POSITION. LANDING GEAR DOOR LIGHTS REMAINED ILLUMINATED WHEN GEAR HANDLE PLACED IN DOWN POSITION. EMERGENCY DECLARED. LANDING UNEVENTFUL. AIRCRAFT GROUNDED. MAINTENANCE ACCOMPLISHED BITE CHECK OF PSEU WITH HARD FAILURE CARD 011 FAULT RETURNED. REMOVED AND REPLACED PSEU AND ACCOMPLISHED TEST IAW AMM 32-09-04. SYSTEM CHECKS NORMAL.