Modifications

Complementing our maintenance services are our equally impressive modification capabilities. Over our 20-year history, we have successfully completed numerous modifications, including those designed in-house, as well as those developed by our customers and service partners.

We have the unique ability to design and develop engineering solutions and then perform the modifications here in our Mobile facilities. These may range from simple modifications such as refreshing the aircraft cabin or upgrading the in-flight entertainment system to complex passenger-to-freighter conversions.

Special Freighter Supplemental Type Certificate

One of our most extensive and recent modification programs is our 757-200 Special Freighter Supplemental Type Certificate (STC). Our responsibilities in this program include:

• Developing the Statement of Work with the customer.
• Submission of a certification plan in support of the STC application.
• Designing the modifications to the airframe, and entire aircraft and avionics systems to accept the new cargo door and cargo handling systems.
• Producing the detailed engineering drawings, and modification work cards.
• Preparing detailed parts manufacturing drawings and mylars.
• Working with partners and suppliers to develop and manufacture tooling and the modification kits.
• Performing the substantiation analysis for structural loads, stress (inclusive of Finite Element Modeling), damage tolerance, payloads, electrical loads, egress and safety, cooling, smoke evacuation, and aerodynamics.
• Planning, performing and conforming the prototype modification.
• Conducting ground and flight testing of the prototype.
• Producing technical supplements.
• Integrating fleet standardization upgrades.

Our team of design engineers and Designated Engineering Representatives (DER) has successfully developed variants of the initial STC to suit any customer's requirements. Beyond the engineering development and certification of the prototype, we have the flexibility to ramp up production of the aircraft by adding lines of modification at our sister companies.

STA Mobile's customers have the added assurance that we are here to support our designs and modifications for the life of the design, being a financially stable MRO with the backing of a large, world-wide parent company.