Browse Standards AIR5005A
Current REVISED 2015-09-21

Aerospace - Commercial Aircraft Hydraulic Systems AIR5005A

This SAE Aerospace Information Report (AIR) has been compiled to provide information on hydraulic systems fitted to commercial aircraft.
Data has been provided for following aircraft types:
  1. a
    Wide body jet airliners
  2. b
    Narrow body jet airliners
  3. c
    Turboprop/commuter aircraft
  4. d
    Business jet aircraft
The airliners that have been included in this document are generally in operational service with either airlines or cargo operators. Information on aircraft that have been retired from in-service use has been included for reference purposes. No information is presented for aircraft that are currently being developed.
The following information is provided for each aircraft
  • Design requirements: Governing airworthiness regulations
  • System pressure: Fluid power system operating pressure
  • Hydraulic fluid: Type of fluid the hydraulic system uses
  • Number of hydraulic systems: Number and identification of independent hydraulic systems
  • System temperature: Minimum and maximum design operating temperatures
  • Main hydraulic pump data: Flow, pressure, displacement
  • Auxiliary pump data: System auxiliary pump or back-up data
  • Hydraulic motor data: System hydraulic motor requirements
  • Accumulator data: Usage, volume and precharge requirements
  • Reservoir data: Type, volume and pressure
  • Relief valve data: Usage, crack and reseat pressures, rated flow
  • Filtration data: Usage, filtration rating
  • Tubing data: Materials, sizes, wall thicknesses
  • Fitting data: Type, size range, material
  • Schematic diagram: System architecture, services supplied


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