Accession Number : ADA304693

Title :   737 Graphite Composite Flight Spoiler Flight Service Evaluation.

Descriptive Note : Annual rept. no. 1,

Corporate Author : BOEING COMMERCIAL AIRPLANE CO SEATTLE WA

Personal Author(s) : Stoecklin, Robert L.

PDF Url : ADA304693

Report Date : MAY 1975

Pagination or Media Count : 40

Abstract : This flight service report was prepared in compliance with the requirements of contract NAS1-11668 and covers the flight service experience of 108 graphite-epoxy spoilers on 737 transport aircraft and related ground-based environmental exposure of graphite-epoxy material specimens for the period from July 1973 through March 1975. Four spoilers have been installed on each of 27 aircraft representing six major airlines operating throughout the world. A flight service evaluation program of at least 5 years duration is underway. As of February 28, 1975, a total of 294 280 spoiler flight-hours and 460 686 spoiler landings had been accumulated by this fleet. Based on visual, ultrasonic, and destructive testing, there has been no evidence of moisture migration into the honeycomb core and no core corrosion. Tests of removed spoilers and of ground-based exposure specimens after the first year of service indicate no significant changes in composite strength. (MM)

Descriptors :   *TRANSPORT AIRCRAFT, *SPOILERS, *GRAPHITE EPOXY COMPOSITES, LOAD DISTRIBUTION, CONTRACTS, CORROSION, COMPOSITE MATERIALS, STIFFNESS, DEFLECTION, COMMERCIAL AVIATION, VISUAL INSPECTION, AIRCRAFT LANDINGS, STATIC TESTS, ULTRASONIC TESTS, HONEYCOMB CORES, DESTRUCTIVE TESTS.

Subject Categories : Transport Aircraft
      Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE