All About Part Type 28 Thinner RA for Aviation Buyers

Providing more than visual appeal, exterior aircraft coatings often serve as essential safeguards against the structural degradation of aluminum and composite substrates, doing so by acting as a shield against moisture ingress and electrochemical oxidation. Beyond such capabilities, coatings are also leveraged by many to establish a smooth workpiece surface that preserves an aircraft’s laminar flow, and by proxy, its fuel efficiency and lift. To make sure any coatings are applied and cured correctly for the means of achieving all favorable characteristics, technicians must learn how to use a controlled ratio of pigments, binders, and solvents to achieve the perfect viscosity.

One recommended product on the market that is used in this effort is the part known as “28 Thinner RA,” a reduction agent that is specially formulated for use with high-performance aviation polyurethane topcoats. This blog will serve to guide you through the basics of the 28 Thinner RA part type, focusing on in-demand offerings we carry like part number 110-928-GL-DS from Hawker Beechcraft and approved alternatives.

The Legacy of Hawker Beechcraft and the Textron Transition

To understand the procurement landscape for this specific thinner product and part number, it is important to first familiarize yourself with its original manufacturer, Hawker Beechcraft. While now a part of Textron Aviation, Hawker Beechcraft was once a titan of the general aviation and business jet sectors, formed from the historical merger of Beech Aircraft Corporation and Hawker Siddeley. While ceasing operations in 2014 and shifting to become a subsidiary, Hawker Beechcraft offerings and services continue to be supported by Textron.

As the successor Type Certificate holder for the legacy fleet of Hawker Beechcraft, Textron continues to oversee the production of the 28 Thinner RA part type and other similar coatings through authorized sources. This means that operators of legacy aircraft that use these solvents can still procure options that adhere to original certification and airworthiness data, with Purchasing Matrix serving as a reliable source.

Technical Specifications of 28 Thinner RA Part Number 110-928-GL-DS

As briefly noted, the 28 Thinner RA part listing on our website is a high-solids reduction agent that is intended to be mixed with polyurethane topcoats for optimal protection. When topcoats are too thick, smoothing surfaces becomes difficult and full safeguarding of components may not be upheld. This is where products like the 28 Thinner RA part listing come in, offering a means to lower coat viscosity for optimal spray-gun application.

What Does the “RA” Mean of the Part Name Mean?

The RA suffix of the part description stands for “Rapid Appearance” or “Rapid Action”, denoting that the coating is a fast-evaporating solvent. RA options tend to prove particularly useful in cooler hangar environments or spot repairs, where a technician may need paint to flash off quickly to prevent runs on vertical surfaces. 

What Does the “GL” In the Part Number Mean?

The GL suffix present in part number 110-928-GL-DS indicates that the item comes in a one-gallon container.

Common Applications of the 28 Thinner RA Part

Across the aviation industry, this coating may find use on aircraft like the Hawker 800XP and King Air 200/300 series, according to Illustrated Parts Catalog (IPC) and maintenance manual data. Under Chapter 20, Standard Practices - Airframe, it is also listed as a required consumable for achieving the factory-standard finish on the exterior control surfaces and fuselage skins.

Industry Alternatives for Part Number 110-928-GL-DS

In the aerospace industry, it is common for original equipment manufacturers (OEMs) to brand chemicals that are manufactured by other specialized companies, which is the case for part number 110-928-GL-DS. For example, is a rebranded version of the Alexit Thinner 62 by Mankiewicz, the original manufacturer of the coatings used on the assembly lines of certain Hawker Beechcraft aircraft.

As the Mankiewicz version of the 28 Thinner RA part type is more widely available from procurement resources, this is an essential reference for buyers to know in the event of lead-time issues or other availability constraints. Still, keep in mind that any substitution has to be verified against the aircraft’s Type Certificate or approved maintenance data to uphold airworthiness.

Source 28 Thinner RA Products and More on Purchasing Matrix

In summary, 28 Thinner RA is a fundamental component in the preservation of an aircraft’s exterior, offering the rapid-dry characteristics and low-VOC characteristics necessary for modern aviation standards. For those who own or repair legacy Hawker Beechcraft airframes and need a go-to aircraft spare parts supplier, we at ASAP Semiconductor implore you to secure part number 110-928-GL-DS and other items of need Purchasing Matrix.

Whether you are looking to secure the specific part number mentioned, suitable alternatives, or any other aircraft supplies, you can trust that only compliant, authentic options are presented on this website. Beyond transparent sourcing with full documentation included for every order, customers also benefit from competitive pricing and swift fulfillment options. With all that we aim to provide, do not hesitate to check out the selection on Purchasing Matrix and get in touch with our experts to learn more about how we can serve your operations with care.