EASA AD US-2025-01-08: Superseded by FAA AD 2025-15-07

What to do

Operators must identify the part and serial numbers of the Captain's and First Officer's seats and perform detailed inspections and repetitive checks of the horizontal movement system as required. They must also inspect newly included seat part numbers and carry out any on-condition actions such as cable adjustments, overhauls, or seat replacements. The AD becomes effective on March 19, 2025, and compliance with all specified actions by this date is mandatory.

Summary

Airworthiness Directive 2025-01-08 is a final rule issued by the Federal Aviation Administration (FAA) that supersedes AD 2019-22-02. It applies to all Boeing Model 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747-8F, and 747-8 series airplanes. The directive addresses uncommanded fore and aft movement of the Captain's and First Officer's seats by requiring inspections and on-condition actions for affected seat part numbers.

What changed

This AD retains the requirements of AD 2019-22-02 and adds inspections for previously omitted seat part numbers. It also updates service bulletin references and corrects revision dates. Additionally, it clarifies compliance actions related to Ipeco service bulletins and revises column headers in the compliance table for better clarity.

Why it matters

Uncommanded seat movement during critical flight phases like takeoff or landing could obstruct flight controls or cause unintended inputs, risking loss of airplane control. This AD ensures operators identify affected seats and perform necessary inspections and maintenance to mitigate this safety risk. Compliance helps maintain safe cockpit conditions and prevents potential accidents related to seat malfunctions.

What to do

Summary

What changed

Why it matters

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