As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT, THE APU FLAMMED OUT AT FL 320. AND EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO DEPARTURE. AN UNEVENTFUL LANDING WAS MADE. NOTE: NR 1 GENERATOR ON DMI. PERFORMED APU INSPECTION, NO DEFECTS NOTED. OPS CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE. (K)