We’re still collecting data for this aircraft. Routes appear once we’ve seen it fly enough times.
subsequent failure of the spur adapter gearshaft (SAG), after 'retaining ring to compressor impeller machining' occurred and allowed the SAG to shift aft. The mechanism which induced the ring to impeller machining was not determined. Mountainous terrain in the emergency landing area was a related factor.
Mcdonnell Douglas 369D