Accession Number:

ADA063808

Title:

A Method for Adjusting Maintenance Forecasts to Account for Planned Aircraft Sortie Lengths.

Descriptive Note:

Final rept. 1 Apr 77-1 Jun 78,

Corporate Author:

AERONAUTICAL SYSTEMS DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1978-08-01

Pagination or Media Count:

154.0

Abstract:

This report describes the development of a technique for adjusting forecasted failure rates of developmental aircraft systems to account for the effect of the planned sortie lenths of the new aircraft. This technique utilizes maintenance data collected from the current inventory of comparison operational systems. After all other factors have been scrutinized, the failures resulting in maintenace actions are plotted against average sortie lengths. Then linear regression is used to smooth chance variation and the intercept is related to cyclic or warm-up failure rates while the slope is related to time induced failures. This technique is used to analyze failure rates for four aircraft types three military and one civilian. Comparisons are made and it is recommended that this technique be used in forecasting failure rates of developmental military aircraft systems. Author

Subject Categories:

  • Aircraft
  • Manufacturing and Industrial Engineering and Control of Production Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE