Boeing 747s Face Mandatory Rust Checks on Antennas
Published Date: 9/30/2025
Proposed Rule
Summary
The FAA wants all Boeing 747 models to get regular check-ups for rust on a special satellite antenna part. If they find any corrosion, repairs or replacements will be needed to keep flights safe. These inspections will happen often, so airlines should be ready for some extra work and costs soon.
Analyzed Economic Effects
2 provisions identified: 1 benefits, 1 costs, 0 mixed.
Required Repetitive Inspections for Boeing 747s
The FAA would require repetitive detailed inspections of the SATCOM high gain antenna adapter plate on all listed Boeing 747 models (including 747-100, -100B, -100B SUD, -200B, -200C, -200F, -300, -400, -400D, -400F, 747SP, and 747SR). If inspectors find corrosion, operators must perform applicable on-condition actions such as repairs or replacements. The rule means airlines and operators should expect extra maintenance work and related costs from these recurring inspections.
Improves Safety on Affected 747 Flights
The FAA says the inspections aim to address an unsafe condition caused by corrosion on the SATCOM antenna adapter plate and to keep flights safe on the listed Boeing 747 models. If corrosion is found and fixed, that reduces the safety risk linked to this part. If you fly on these 747 models, the inspections are intended to improve safety by finding and fixing corrosion.
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