Airworthiness DirectiveEASA AD US-2021-10-19

Maintenance or Inspection Program - Revision

Published: May 31, 2021
Effective: Jul 1, 2021
Deadline: Jul 1, 2021
Replaces: 2014-14-04

Boeing 767 200 300 300F 400ER

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

What to do

Operators of Boeing 767-200, -300, -300F, and -400ER series airplanes must revise their maintenance or inspection programs within 24 months of the directive's effective date to include the specified new airworthiness limitations and damage tolerance rating check forms. They should consult the Boeing service documents D622T001-9-01 (July 2020) and D622T001-DTR (February 2020) for detailed instructions. For airplanes with Supplemental Type Certificate ST01920SE installed, operators may need to seek an alternative method of compliance approval.

Summary

The Federal Aviation Administration's Airworthiness Directive 2021-10-19 is a final rule addressing certain Boeing Company Model 767-200, -300, -300F, and -400ER series airplanes. This directive requires revising the existing maintenance or inspection programs to incorporate new or more restrictive airworthiness limitations and damage tolerance rating checks. The directive aims to enhance safety by addressing potential fatigue cracking in structurally significant items.

What changed

This new airworthiness directive introduces updated and more restrictive airworthiness limitations and damage tolerance rating values that must be incorporated into the maintenance or inspection programs for the affected Boeing 767 models. It expands applicability to additional airplanes and mandates compliance within a specified timeframe. The directive also addresses the need for alternative methods of compliance for airplanes with certain Supplemental Type Certificates installed.

Why it matters

This directive is critical for aviation professionals because it ensures that maintenance programs are updated to detect and prevent fatigue cracking in key structural components, thereby maintaining the structural integrity and safe operation of Boeing 767 aircraft. Operators and maintenance organizations must comply to avoid unsafe conditions that could lead to loss of limit load capability and jeopardize safe flight and landing. Compliance also ensures adherence to FAA regulatory requirements and avoids potential enforcement actions.

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