AD 2018-20-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Gulfstream | Aerospace Corporation | Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes |
Unsafe Condition
Loss of bi-directional (Transmit/Receive) BD429 communication between the REU and the FCC due to wire/connector failures, which can result in the display of a cyan ``FCS MAINTENANCE REQUIRED'' advisory message on the crew alerting system (CAS).
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Revising the Normal and Abnormal Procedures sections of the airplane flight manual (AFM) by adding instructions and warnings for the pilot if a cyan ``FCS MAINTENANCE REQUIRED'' CAS message displays with the airplane on the ground or in flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Gulfstream Aerospace Corporation Model GVI airplanes
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.