As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
During stop over in STL while inspecting the fwd airstair door cutout, 2 cracks were found in the fuselage skin at the lower aft corner. One crack is approx. .025" long and extends FWD from fastener hole. The second crack is .050" long and extends aft from the lower corner radius. Repaired per EA 99-185358.