EASA AD US-2024-10-05
Equipment / Furnishings - Decompression Panels and Pressure Equalization Valves in the Forward and Aft Lower Lobe Cargo Compartments - Inspections / Replacement / Installation
Summary
The Federal Aviation Administration's Airworthiness Directive 2024-10-05 addresses certain Boeing Company Model 757 airplanes. It mandates inspections and corrective actions for decompression panels and pressure equalization valves in the forward and aft lower lobe cargo compartments to prevent damage that could compromise cargo fire protection and airplane structural integrity.
What Changed
This new airworthiness directive introduces repetitive detailed inspections of decompression panels and pressure equalization valves, installation of decompression panels with billet grilles for certain airplanes, replacement of soft bulkheads with rigid bulkheads for others, and installation of doublers on bulkhead assembly panels. It responds to reports of frequent and severe damage to blowout vent grilles in the lower lobe cargo compartments.
Why It Matters
This directive is critical for aviation professionals because damage to decompression panels and pressure equalization valves can lead to latent failures that impair fire protection systems and structural components. Failure to address these issues could result in compromised flight safety, including loss of hydraulic systems and flight controls, making compliance essential for operators and maintenance organizations.
What To Do
Operators of affected Boeing 757 airplanes must perform repetitive detailed inspections of specified decompression panels and pressure equalization valves and carry out any required repairs or replacements. For certain aircraft, installation of billet grille decompression panels or rigid bulkheads and doublers is required. Compliance with these actions is mandatory by July 19, 2024.