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 VERTOL CO PHILADELPHIA PA

Personal Author(s):

Report Date:

1971-11-01

Pagination or Media Count:

121.0

Abstract:

The report provides the results of an analysis of failure data derived from depot inspection, overhaulrework, 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 repairrework was provided.

Subject Categories:

  • Helicopters

Distribution Statement:

APPROVED FOR PUBLIC RELEASE