As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 3435 - AFTER TAKEOFF, CONFIGURATION WARNING LIGHT ILLUMINATED. CREW RECYCLED LANDING GEAR WITH NO CHANGE. AIRCRAFT RETURNED TO DTW. MAINTENANCE REPLACED SEALS IN LEFT STRUT AND SERVICED. MAINTENANCE PERFORMED CONFIGURATION CHECK PER SAAB MM. (M)