Investigation of the effect of IRAN (inspect and repair as necessary) depot maintenance on the F-106 aircraft. This effect is measured in terms of aircraft performance (using ADCM 66-28 data) before and after IRAN, and in terms of interval length between successive IRANs. Results indicate that aircraft are not in a degraded condition prior to IRAN, and are not improved by IRAN. Further, aircraft with long intervals (calendar time or flying hours) between successive IRANs are not in worse condition than those with short intervals. In addition, there is no measurable significant difference in depot maintenance manhours as a function of interval between IRANs. When this study was conducted in early 1970, the results did not support the then current Air Force policy that required an F-106 IRAN at two year intervals.
This report is part of the RAND Corporation Report series. The report was a product of the RAND Corporation from 1948 to 1993 that represented the principal publication documenting and transmitting RAND's major research findings and final research.
This document and trademark(s) contained herein are protected by law. This representation of RAND intellectual property is provided for noncommercial use only. Unauthorized posting of this publication online is prohibited; linking directly to this product page is encouraged. Permission is required from RAND to reproduce, or reuse in another form, any of its research documents for commercial purposes. For information on reprint and reuse permissions, please visit www.rand.org/pubs/permissions.
The RAND Corporation is a nonprofit institution that helps improve policy and decisionmaking through research and analysis. RAND's publications do not necessarily reflect the opinions of its research clients and sponsors.