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Refer to figure.
What is the maximum helicopter mass to conduct a hover in ground effect at 9000 feet pressure altitude and an outside air temperature of +10°C?

  • A

    2410 kg

  • B

    2410 lb

  • C

    2360 kg

  • D

    2360 lb

Refer to figure.
This graph is used to determine:

  • The maximum mass to Hover In Ground Effect (HIGE) at a given pressure altitude with a given temperature (if entered in the graph with pressure altitude).
  • The maximum pressure altitude to Hover In Ground Effect (HIGE) for a given mass at a given temperature (if entered in the graph with mass).

For this question, to determine the maximum helicopter mass to conduct a HIGE, proceed with the following manner:

  • Enter with pressure altitude 9000 ft from the left side of the graph.
  • Move horizontally to the right until the +10°C temperature line.
  • Continue vertically downwards to read the maximum helicopter mass 2410 lbs.

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