As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DTW - FLT 1253 - AIRFOIL DE-ICE ON LEFT AND RIGHT ICE PROTECTION LOW LIGHTS STAY ON 90 PERCENT OFF TIME, FLT IDEL LIGHT STAYS ON 100 PERCENT OF THE TIME MAX SUPPLY PRESSURE 7 LBS. BOTH SIDES CABIN PRESSURE FLOW LIGHT COMES ON. UNSCHEDULED CHANGE OF A/C EN ROUTE. (M)