EASA AD US-2024-12-07
Fuselage - Lavatory Service Panel, Access Pan, and Attaching Structure - Inspection
Summary
The Federal Register document titled 'Fuselage - Lavatory Service Panel, Access Pan, and Attaching Structure - Inspection' is a final rule airworthiness directive (AD 2024-12-07) issued by the FAA affecting Boeing 757-200 airplanes modified by specific supplemental type certificates. It addresses reports of cracking in and around the lavatory service panel structure. The AD mandates repetitive inspections, reinforcement of the attaching structure, and repair or replacement of affected parts to ensure continued airworthiness.
What Changed
This new AD introduces mandatory repetitive detailed visual and eddy current inspections of the lavatory service panel, access pan, and attaching structure for cracks. It requires reinforcement of the attaching structure within 2,000 flight cycles after the initial inspection, removing the option for repeated inspections without reinforcement. Additionally, it mandates replacement or repair of cracked components as necessary.
Why It Matters
This AD is critical for aviation professionals because it addresses a safety risk of fatigue cracking that could lead to in-flight depressurization and reduced structural integrity of Boeing 757-200 aircraft. Operators and maintenance teams must comply to prevent potential structural failures and ensure regulatory compliance. The directive impacts maintenance planning, inspection schedules, and potential repair or replacement costs.
What To Do
Affected operators must perform the required detailed visual and eddy current inspections of the lavatory service panel, access pan, and attaching structure within three months after the AD's effective date of July 11, 2024. They must install the required reinforcement within 2,000 flight cycles following the initial inspection. If cracks are found, operators must replace or repair the access pan or other damaged parts following the specified procedures.