Certification of the Sabreliner Safe-Life Structure 670257
Unique, in an era of fail-safe airplane designs, is the safe-life Sabreliner, twin-jet executive airplane. A description of the methods of fatigue analysis and tests which were required to obtain Federal Aviation Agency certification under the Transport Category are presented. The overall program of tests is briefly described, with the major discussion devoted to the fatigue evaluation.
The Sabreliner fatigue life has progressed from an initial 10,000 flight hr requested for military use to a current program of establishing a 30,000 hr airframe life.
The successful application of the safe-life design concept is attested by low airframe maintenance experienced by military users of the Sabreliner where 200 hr of operation per month are common.