What was found
CAPTAIN'S NAV RECEIVER FAILED SHORTLY AFTER TAKEOFF. FLIGHT RETURNED TO DTW AND LANDED WITHOUT INCIDENT. REPLACED NR 1 NAV RECEIVER. OPERATIONAL CHECK OK AND AIRCRAFT RETURNED TO SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
CAPTAIN'S NAV RECEIVER FAILED SHORTLY AFTER TAKEOFF. FLIGHT RETURNED TO DTW AND LANDED WITHOUT INCIDENT. REPLACED NR 1 NAV RECEIVER. OPERATIONAL CHECK OK AND AIRCRAFT RETURNED TO SERVICE.