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The limits of the white scale of an airspeed indicator are…

  • A

    VS0 for the lower limit and VFE for the upper limit

  • B

    VS1 for the lower limit and VFE for the upper limit

  • C

    VS1 for the lower limit and VLE for the upper limit

  • D

    VS0 for the lower limit and VLE for the upper limit

Refer to figure.
White arc:

  • Lower limit – VS0: stalling speed with flaps extended.
  • Upper limit – VFE: maximum speed with flaps extended.

Green Arc:

  • Lower limit – VS1: stalling speed in clean configuration.
  • Upper limit – VNO: maximum speed in normal operation.

Yellow arc:

  • Lower limit – VNO: maximum speed in normal operation.
  • Upper limit – VNE: Red Line - never exceed speed.

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