What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) On 3/30/00, delta Boeing model 767, s/n 25987, had experienced an uncommanded 60 degree bank roll to right. The crew then applied full left aileron, but the aircraft did not recover until the crew applied the left ruddder. The aircraft then recovered and flew normally at that point. The aircraft then returned back to the field and landed without an incident. According to delta logbook entry on pages B-794649, 650, 703, 704, 705, 707, and 708 the CVR and FDR were removed and sent to atl. They then performed a maintenance set-up test on the auto pilot/ils and inspected the rudder push rod system. All systerms were normal. They then removed and replace the left, center and right flight control computers. A mode control display panel bite test was performed. The auto pilot mode control panel was also removed and replaced. A functional check flight was then performed on the ground and in the air. All flight controls operated normally at that time. The aircraft was then released back to service and flown to Boeing for further investigation.
As the FAA filed it
(-23) ON 3/30/00, DELTA BOEING MODEL 767, S/N 25987, HAD EXPERIENCED AN UNCOMMANDED 60 DEGREE BANK ROLL TO RIGHT. THE CREW THEN APPLIED FULL LEFT AILERON, BUT THE AIRCRAFT DID NOT RECOVER UNTIL THE CREW APPLIED THE LEFT RUDDDER. THE AIRCRAFT THEN RECOVERED AND FLEW NORMALLY AT THAT POINT. THE AIRCRAFT THEN RETURNED BACK TO THE FIELD AND LANDED WITHOUT AN INCIDENT. ACCORDING TO DELTA LOGBOOK ENTRY ON PAGES B-794649, 650, 703, 704, 705, 707, AND 708 THE CVR AND FDR WERE REMOVED AND SENT TO ATL. THEY THEN PERFORMED A MAINTENANCE SET-UP TEST ON THE AUTO PILOT/ILS AND INSPECTED THE RUDDER PUSH ROD SYSTEM. ALL SYSTERMS WERE NORMAL. THEY THEN REMOVED AND REPLACE THE LEFT, CENTER AND RIGHT FLIGHT CONTROL COMPUTERS. A MODE CONTROL DISPLAY PANEL BITE TEST WAS PERFORMED. THE AUTO PILOT MODE CONTROL PANEL WAS ALSO REMOVED AND REPLACED. A FUNCTIONAL CHECK FLIGHT WAS THEN PERFORMED ON THE GROUND AND IN THE AIR. ALL FLIGHT CONTROLS OPERATED NORMALLY AT THAT TIME. THE AIRCRAFT WAS THEN RELEASED BACK TO SERVICE AND FLOWN TO BOEING FOR FURTHER INVESTIGATION.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.