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5 Answers

91.205 (d) (9) Gyroscopic direction indicator

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Aircraft Systems, FAA Regulations, General Aviation, Instrument Rating, Private Pilot

In this section of the FAR it is stated that for IFR flight, a Gyroscopic direction indicator (directional gyro or equivalent) is required. What would the "equivalent" be? Could this be a digital representation of a heading indicator that is not gyroscopic such as on an iPad? This is assuming that all other requirements are met such as mag direction indicator compass and all equipment installed is operational.

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5 Answers



  1. Wes Beard on Nov 16, 2013

    The equivalent would be an AHRS or IRS system. These systems are approved by the FAA when the plane was certified certified through a supplemental type certificate.

    The iPad is not FAA approved.

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  2. Wes Beard on Nov 16, 2013

    I meant to say when the airplane was originally type certified or through a supplemental type certificate.

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  3. John D Collins on Nov 16, 2013

    The equipment must be installed in the aircraft, therefore an iPad is not an equivalent to a directional gyro. An HSI, EHSI, PFD would be equivalent to a directional gyro.

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  4. Sam Dawson on Nov 17, 2013

    Also remember that 91.205(d)(9) is not the beginning nor the end of what is required. As an example if you are flying a part 23 airplane pitot heat is required per 23.1323.

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  5. Alessandro Acosta on Feb 19, 2014

    Would a vertical card compass sufice?

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