Date of Award

8-21-2025

Document Type

Thesis

Degree Name

Master of Science

Department

Department of Operational Sciences

First Advisor

Justin P. D'Agostino

Abstract

Readiness Spares Packages (RSP) are critical to deployed operations. Future demands of the Air Force require squadrons to operate in different climate environments from home stations. RSPs can sustain aircraft maintenance operations for up to 30 days. Currently, failure rates of parts within the RSP are assumed to be constant. This research aims to explore whether there is a difference in F-15 RSP failure rates when Koeppen climate classifications are taken into effect. The Koeppen-Geiger system classifies area climates based on the geography, elevation, and location. The history of operations and diversity of F-15 locations make the aircraft an ideal candidate for this research. Historical demand signals on F-15 RSP parts were used in conjunction with location specific flying hours to calculate monthly failure rates. Failure rates are specific to different parts that fall under the RSP list. Parts were chosen based on their proportion to total F-15 RSP part demands. Data ranged from December 2021 to March 2025. Non-parametric methods were used to compare medians of part data to determine whether a part's failure rate differed significantly between Koeppen climate classifications. Several parts from the F-15C and F-15E RSP show that Koeppen climate effects are associated with part failure rates.

AFIT Designator

AFIT-ENS-MS-25-S-005

Comments

An embargo was observed for posting this dissertation on AFIT Scholar.
Approved for Public Release, Distribution A: Distribution Unlimited. PA Case Number 88ABW-2025-0776

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