As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: WITH THE RIGHT HAND ENGINE GENERATOR INOPERATIVE AND ON MEL , THE APU AUTO SHUT DOWN ON INITIAL CLIMBOUT AT FL 290. THE AIRCRAFT RETURNED TO PDX AND DECLARED AN EMERGENCY DUE TO THE AIRCRAFT WAS DOWN TO 1 GENERATOR. THE AIRCRAFT LANDED SAFELY AT PDX AND TAXIED TO THE GATE UNDER ITS OWN POWER. ** SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)