What was found
DURING TAKEOFF PSU 1DF FELL DOWN. O2 GENERATORS DID NOT ACTIVATE. ACFT RETURNED TO FIELD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING TAKEOFF PSU 1DF FELL DOWN. O2 GENERATORS DID NOT ACTIVATE. ACFT RETURNED TO FIELD.