Superseded. This AD was superseded by AD 2021-12-14. Verify which one applies to your serial and effectivity before any maintenance action.
AD 2020-08-11
Effective 05/22/2020 · Published 05/07/2020
Airworthiness Directives; Yaborã Indústria Aeronáutica S.A. (Type Certificate Previously Held by Embraer S.A.)
Summary
The FAA is adopting a new airworthiness directive (AD) for all Yabor[atilde] Ind[uacute]stria Aeron[aacute]utica S.A. Model ERJ 190- 300 and ERJ 190-400 airplanes. This AD was prompted by a failure propagation test, which revealed that when complete loss of the electrical digital current (DC) essential bus 2 was induced, the smoke detection system of the forward and aft electrical bays erroneously indicated the pres…