Examining Failures of KC-135s Using Survival Analysis

Abstract

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.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2022
Accession Number
AD1177447

Entities

People

  • Vanessa I. Unseth

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Biomedical

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Air Force Research Laboratories
  • Aircrafts
  • Airframes
  • Algorithms
  • Condition Based Maintenance
  • Data Sets
  • Department Of Defense
  • Descriptive Analytics
  • Engineering
  • Governments
  • Information Science
  • Inventory
  • Literature Surveys
  • Logistics
  • Maintenance
  • Social Sciences
  • Statistics
  • Supply Chain Management
  • United States

Readers

  • Aerospace logistics and air mobility.
  • Neural Network Machine Learning.
  • Statistical inference.