Boeing 737-400 Service Bulletin Completed

We’re thrilled to announce the successful completion of Boeing’s Service Bulletin SB737-57A1321 on a B737-400 aircraft for one of our valued clients.

Bulletin Purpose

This bulletin is to minimise the risk of electrical discharge into the aircraft’s fuel and involves locating and carefully sealing fasteners within the fuel tanks of the aircraft. This approach ensures that fasteners won’t pose any risk of electrical discharge, thanks to the non-conductive sealant that prevents such incidents.

Our Approach

In this case we fully de-panelled and partially removed rib doors to access the fuel tanks efficiently. Then, we meticulously located and degreased fasteners, preparing them for the sealing process. The application of specific sealants followed, ensuring thorough coverage and protection against electrical discharge. The fasteners were given a second coating for added security. Finally, after a comprehensive inspection, the aircraft was re-panelled and signed off for service.

But whilst it might sound like a simple fix it is important you trust an experienced fuel tank team like MPI 24/7 for the work. At MPI, with over 20 years’ experience in all manner of repairs and maintenance in aircraft fuel tanks no-one is better qualified for the work.

Accreditation

On top of our experience and expertise we are accredited to AS9100: Revision D and ISO9001:2015 certified ensuring compliance with aviation safety regulations, giving you and regulatory authorities peace of mind.

Why MPI 24/7?

24/7 Availability: Need us at 3 a.m. on a Sunday? We’ve got you covered. Our commitment to around-the-clock service means we’re always ready to meet your maintenance needs, no matter the hour.

Don’t just take our word for it—our track record speaks volumes. With a history of successful projects and satisfied clients, we’ve earned a reputation for reliability and excellence in the aviation industry.

In essence, choosing MPI isn’t just about getting the job done; it’s about raising the bar for aviation maintenance. Trust us to deliver results that exceed your expectations and keep your aircraft flying safely, every time.

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Certification

MPI are experts in Aerospace Quality standards, having received initial certification to AS9110. We expanded our accreditation in 2012 to AS9100C and, as pioneers, became the first company to transition to AS9100D 2016, a full year ahead of the deadline.

Keeping client needs in focus, this transition was utilised to comprehensively enhance our quality management system, implementing numerous effective new procedures, processes, and documents in line with the new standard.

With roots in ISO 9001 certification since 1995, and an extension to AS 9100 from 2008, MPI encapsulates the essential elements of ISO9001:2015. We go above and beyond to align with global aerospace standards in regulatory compliance.

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