AD 2019-01-02
Unsafe Condition
intermittent loss of airspeed, attitude, and altitude information during flight could result in loss of control of the airplane in Instrument Meteorological Conditions (IMC) or at night.
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Required Actions
Disabling the ADS-B In function in each installer menu by changing the RS-232 INPUT for the bus connected to the ADS-B In to NONE. Revising the Airplane Flight Manual Supplement (AFMS) to reflect each disabled unit.
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Compliance Time
Before further flight
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Affected Aircraft
Aspen Avionics, Inc. Evolution Flight Display (EFD) EFD1000 Primary Flight Display (PFD), EFD1000 Multi-Function Display (MFD), EFD1000 Emergency Backup Display (EBD), and EFD500 MFD units installed on various aircraft.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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