AeroShell Shock Strut Fluid (SSF)


AeroShell Shock Strut Fluid (SSF) is a mineral hydraulic fluid (MIL-PRF-6083) to which additional additives have been added to improve the extreme pressure characteristics and the fluid’s natural lubricity. The lubricity agent provides a stable thin film layer to the metal surfaces at mild operating conditions. When severe conditions exist (landing/touchdown), the extreme pressure additive supplies the load carrying needed at the metal-to-metal surfaces to prevent the occurrence of such phenomena as “ladder cracking” and “slip stiction” of the piston component of the landing gear. AeroShell SSF is AeroShell Fluid 71 plus additives.


Main Applications


  • AeroShell SSF is recommended for all normal applications.
  • AeroShell SSF is compatible with AeroShell LGF and also with AeroShell Fluids 4, 41 and 71.
  • AeroShell SSF is straw yellow in colour.


Specifications, Approvals & Recommendations


  • Boeing – BMS 3-32C (Type I)
  • McDonnell Douglas – DPM-6177
  • AeroShell SSF is not covered by any military specification.


AeroShell SSF is approved for use in the shock struts of the following aircraft:


  • Boeing 707/720, 727, 737, 747 (except those using BMS 3- 11 fluids), 757, 767 and 777
  • Lockheed L1011 Tristar
  • McDonnell Douglas DC-8, DC-9, DC-10, MD-80, MD-11
  • Airbus CML Code 02-004A


For use in the landing gear shock struts of other aircraft, operators must check with the respective manufacturer first.


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