Date of Award
Master of Science
Department of Operational Sciences
Seong-Jong Joo, PhD
The United States Air Force manages an inventory of 396 KC-135 Stratotanker aircraft. With mission capability rates falling and total non-mission capability supply rates increasing, it is necessary to take a deeper look at recurrent failures. The study applies non-parametric and semi-parametric survival models to a dataset retrieved from LIMS-EV to look at the duration(s) until failure for the KC-135. Results of non-parametric models show cumulative failure rates increase as sorties or flight hours increase. In addition, semi-parametric models or Cox proportional hazards models with frailty confirm that locations or air bases are not associated with recurrent failures.
DTIC Accession Number
Unseth, Vanessa I. R., "Examining Failures of KC-135s using Survival Analysis" (2022). Theses and Dissertations. 5476.