Federal Register #20261351

FAA Airworthiness Directives for Gulfstream GVIII-G700/GVIII-G800 and Boeing 747-8F Aircraft

The Federal Aviation Administration (FAA) has issued new airworthiness directives (ADs) targeting safety concerns for specific aircraft models. - Government Buyer: - Federal Aviation Administration (FAA), Department of Transportation - OEMs Involved: - Gulfstream Aerospace Corporation (for GVIII-G700 and GVIII-G800 airplanes) - The Boeing Company (for Model 747-8F airplanes) - Products/Services Requested: - For Gulfstream GVIII-G700 and GVIII-G800: - Visual inspection of engine mount surfaces and hardware (sleeve bushing, nut, washers, cotter pins) on both engines - Corrective actions if evidence of movement, distress, or improper installation is found - Compliance with Gulfstream Alert Customer Bulletins No. 001 - Affects 37 U.S. aircraft - For Boeing 747-8F: - Inspection and corrective actions for stringers and splice fittings to address potential cracking - Actions per Boeing Alert Requirements Bulletin 74753A2907 RB, Revision 1 - Unique or Notable Requirements: - Inspections and any required repairs must be completed before further flight for affected aircraft - No special flight permits allowed if discrepancies are found - FAA-approved corrective actions required for any identified issues - The Gulfstream directive is an emergency AD, effective immediately for known operators - These are safety directives, not procurement of new products or services, but may require purchase of replacement hardware if issues are found

Description

The FAA is adopting a new airworthiness directive (AD) for certain Gulfstream Aerospace Corporation Model GVIII-G700 and GVIII-G800 airplanes. This AD was prompted by a report indicating that a hollow pin cap on the right-side engine aft thrust strut mount interface was found broken due to a missing sleeve bushing. The AD requires a visual inspection of the engine mount surfaces and hardware to ensure proper installation and to detect any distress or movement, along with applicable corrective actions. The FAA previously issued an emergency AD to all known U.S. owners and operators of these airplanes to address this unsafe condition.

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