EASA AD US-2020-26-08
SUPERSEDED BY FAA AD 2024-01-04
Summary
FAA Airworthiness Directive 2020-26-08 is a final rule addressing The Boeing Company Model 787-8, 787-9, and 787-10 airplanes powered by Rolls Royce Trent 1000 engines. This directive mandates repetitive inspections of the inner fixed structure (IFS) forward upper fire seal and thermal insulation blankets in the forward upper area of the thrust reverser to detect and address damage. The directive aims to mitigate risks related to potential uncontrolled engine fires caused by damage to these components.
What Changed
This new airworthiness directive introduces mandatory repetitive inspections and applicable on-condition actions for the IFS forward upper fire seal and thermal insulation blankets in the thrust reverser area. It addresses a newly identified cause of damage distinct from previous directives, focusing on structural gapping and airflow issues that could compromise fire containment. The directive clarifies inspection responsibilities and refines the description of the unsafe condition to better reflect the risks involved.
Why It Matters
This directive is critical for aviation professionals as it highlights a safety risk that could lead to uncontrolled engine fires if not properly managed. Operators and maintenance organizations must ensure compliance to maintain aircraft airworthiness and safety. Understanding the specific inspection requirements and potential consequences helps in planning maintenance and avoiding operational disruptions.
What To Do
Affected operators must perform repetitive inspections of the IFS forward upper fire seal and thermal insulation blankets in the thrust reverser area as specified in the directive. Inspections must be conducted by qualified and certified maintenance personnel. The directive became effective on January 27, 2021, and compliance with the inspection schedule and any required corrective actions must be maintained to address the unsafe condition.
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