Superseded by FAA AD 2023-18-06

Published: Feb 25, 2021
Effective: Mar 30, 2021
Deadline: Mar 30, 2021

Boeing 747 100 200 300 400

AI-generated summary of the official EASA document. Verify against the PDF before acting.

What to do

Affected operators must perform the required general visual and detailed inspections, repetitive lubrication, and part replacements as specified in Boeing Alert Requirements Bulletin 747-57A2367 RB dated November 15, 2019. Compliance with this directive is mandatory by March 30, 2021, and any on-condition corrective actions must be completed promptly. Operators should also maintain documentation and may seek FAA approval for alternative methods or parts if needed.

Summary

FAA Airworthiness Directive 2021-02-15 is a final rule addressing certain Boeing Company Model 747 series airplanes, including 747-100, 747-200, 747-300, 747-400, and 747SR variants. It responds to reports of inboard foreflap departures by mandating inspections, repetitive part replacements, lubrication, and on-condition corrective actions to ensure continued airworthiness and safety.

What changed

This new airworthiness directive introduces repetitive inspections and replacements of specific foreflap assembly components, lubrication requirements, and visual inspections for damage or wear. It also clarifies that alternative methods may be approved through AMOCs but does not incorporate operator-specific programs or alternative parts without FAA approval.

Why it matters

This directive is critical for operators and maintenance personnel to prevent inboard foreflap detachment, which could cause significant damage and compromise safe flight and landing. Compliance ensures the structural integrity of the foreflap assembly, reducing the risk of in-flight failures and enhancing overall aircraft safety.

More for Boeing 747

All 80

Get the next one by email

New ADs and bulletins for Boeing 747 and 747SR, summarized like this page, every Monday.