Accession Number : AD0739568

Title :   CH-47A, B and C Series Helicopter Rotor Blade Failure and Scrap Rate Data Analysis.

Descriptive Note : Final rept.,

Corporate Author : BOEING CO PHILADELPHIA PA VERTOL DIV

Personal Author(s) : Hunt,R. L.

Report Date : NOV 1971

Pagination or Media Count : 119

Abstract : The report provides the results of an analysis of failure data derived from depot inspection, overhaul/rework, and scrappage reports on 5,488 rotor blades of the CH-47 series tandem rotor helicopters. Two types of rotor blades were analyzed for blade mean-time-between-removals, mean-time-to-removals, mean-time-between-unscheduled-removals and mean-time-between-scrappage. Locations on these blades for the major discrepancies were determined. Blade teardown experience was determined. A cost comparison of blade acquisition costs versus the average cost of repair/rework was provided. (Author)

Descriptors :   (*ROTOR BLADES(ROTARY WINGS), FAILURE(MECHANICS)), (*MAINTENANCE, ROTOR BLADES(ROTARY WINGS)), HELICOPTERS, MAINTAINABILITY, STATISTICAL ANALYSIS

Subject Categories : Helicopters

Distribution Statement : APPROVED FOR PUBLIC RELEASE