UPS

The case shows how legacy certification decisions can persist even after service history points in another direction.

FAA and Boeing witnesses discussed certification requirements, inspection thresholds and systems routed near the engine pylon.

Investigators questioned FAA, Boeing, UPS and maintenance witnesses on inspection and reporting processes.

FAA-approved protocol includes required maintenance and inspections before the aircraft can fly.

Pilots cite communications issues as reason for early go-around.

Complaint alleges wrongful death and negligence in fatal accident near Louisville.

Carrier accelerated planned phaseout of MD-11 following fatal November accident.

Investigators focus on fractured spherical bearing assembly following deadly UPS MD-11 Louisville accident in November.

Ground victim succumbs to injuries on Christmas, raising Louisville crash toll to 15.

Firm to examine circumstances as investigations into Nov. 4 UPS crash continue.