What was found
WHILE CLIMBING THROUGH 42,000 FEET, THE RAT OUT MESSAGE DISPLAYED AND THE EMERGENCY GENERATOR SHOWED POWER UP. AIRCRAFT RETURNED TO SFO AND LANDED WITHOUT INCIDENT. MAINTENANCE TROUBLESHOOTING REVEALED NO DISCREPANCIES.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHILE CLIMBING THROUGH 42,000 FEET, THE RAT OUT MESSAGE DISPLAYED AND THE EMERGENCY GENERATOR SHOWED POWER UP. AIRCRAFT RETURNED TO SFO AND LANDED WITHOUT INCIDENT. MAINTENANCE TROUBLESHOOTING REVEALED NO DISCREPANCIES.