FAA Requires Rust Checks on 747 Satellite Antennas
Published Date: 5/29/2026
Rule
Summary
The FAA is making sure all Boeing 747 airplanes get checked regularly for rust on a special satellite antenna part. Starting July 6, 2026, owners must inspect this part often and fix any problems to keep flights safe. This rule helps prevent bigger issues and keeps these iconic planes flying smoothly, though it might cost some time and money for inspections and repairs.
Analyzed Economic Effects
4 provisions identified: 1 benefits, 2 costs, 1 mixed.
Repair and Replacement Cost Exposure
If corrosion is found, on-condition actions require either repairing the adapter plate (estimated 5 work-hours = $425) or replacing it (estimated 2 work-hours = $170 plus parts cost of $18,000, totaling $18,170). The AD does not specify how many aircraft will need these actions.
Mandatory SATCOM Antenna Inspections
Starting July 6, 2026, owners/operators of all listed Boeing 747 models must perform repetitive detailed inspections of the SATCOM high gain antenna adapter plate for corrosion. The inspection cycle is specified in Boeing Alert Requirements Bulletin 747-23A2628 RB and must be repeated every 48 or 96 months depending on findings; the FAA estimates an inspection costs 11 work-hours at $85/hour, or $935 per inspection cycle, and the AD applies to 115 U.S.-registered airplanes.
Reduced Risk to Flight Safety
The AD is issued to prevent corrosion that could cause SATCOM high gain antenna parts to depart and impact the airplane, which the FAA says could result in loss of continued safe flight and landing; the inspection and on-condition actions are intended to reduce that risk.
Small-Entity Economic Impact Certification
The FAA estimates this AD will affect 11 domestic entities (eight of which are small entities). The FAA estimates cost per affected airplane is $935 and states one small business operator's revenue impact exceeds 3% while most small entities face impacts below 1% of average annual revenue; the FAA certified the AD will not have a significant economic impact on a substantial number of small entities under the Regulatory Flexibility Act.
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