DOUBLER (P/N 5411121-18) - New Surplus

The 5411121-18 is an aluminum structural doubler for reinforcing aircraft airframe skins around access panels and repaired cutouts. This flat sheet component spreads concentrated loads and arrests crack propagation in the skin. Fastened with MS20470 solid rivets per FAA AC 43.13-1B standards, the doubler installs on the interior surface of the skin to provide localized reinforcement.

Installation follows the aircraft Structural Repair Manual (SRM) specifications. Common in general aviation and commercial aircraft maintenance when skin repairs or panel modifications require stress distribution.

What is the DOUBLER (P/N 5411121-18)?

The 5411121-18 is an aluminum structural doubler for reinforcing aircraft airframe skins around access panels and repaired cutouts. This flat sheet component spreads concentrated loads and arrests crack propagation in the skin.

What conditions is the 5411121-18 available in?

The 5411121-18 is currently available in the following conditions: New Surplus. Each condition reflects the part's maintenance history and certification status per FAA standards.

How do I get pricing for the 5411121-18?

The 5411121-18 requires a custom quote. Submit a Request for Quote (RFQ) through our website or call our sales team at (904) 998-9101 for immediate pricing assistance.

Do you offer expedited shipping for the 5411121-18?

Yes, we offer same-day processing on in-stock items and provide 24/7 AOG (Aircraft on Ground) support for urgent needs. Standard, expedited, and overnight shipping options are available.