An approach to the evaluation of changes in travel unreliability: A “Safety margin” hypothesis
A-Weighted Sound Levels in Cockpits of Fixed- and Rotary-Wing Aircraft
Medical Services: Medical Aspects of Army Aircraft Accident Investigation
Ion Propulsion Module (Ipm) Technology Readiness Assessment: 1985 Halley's Comet Rendezvous Mission
Orbit Transfer Vehicle Engine Study. Phase A, Extension 1: Study Plan Update