Accession Number : ADA137885

Title :   Fuel System O-Ring Leaks on Post P.D.M. (Programmed Depot Maintenance) C-5A Aircraft.

Descriptive Note : Final technical rept. May-Sep 83,

Corporate Author : SAN ANTONIO AIR LOGISTICS CENTER KELLY AFB TX DIRECTORATE OF MATERIEL MANAGEMENT

Personal Author(s) : Forzono,C J

PDF Url : ADA137885

Report Date : Sep 1983

Pagination or Media Count : 38

Abstract : This report presents the data developed and gathered as a result of fuel leaks around O-rings found in C-5 fuel systems following long periods of Programmed Depot Maintenance (PDM). The O-ring leaks occured when the fuel system was refilled after having been empty for 60-90 days during PDM. The study also involved an investigation of Buna-N O-ring shrinkage and swelling characteristics along with some testing of less or no shrinkage O-ring materials like the phosphonitrilic fluoride (PNF) O-ring. (Author)

Descriptors :   *O rings, *Synthetic rubber, Leakage(Fluid), Refueling, Jet transport aircraft, Aircraft maintenance, Fuel systems, Checkout procedures, Shrinkage, Expansion, Fluorides, Resilience, Purging, Jet engine fuels

Subject Categories : Transport Aircraft
      Adhesives, Seals and Binders
      Elastomers and Rubber
      Fuels

Distribution Statement : APPROVED FOR PUBLIC RELEASE