Skip to content
Fuel systems

STC ST09975SC

FAA DRS lists ST09975SC as Current · Reissued, held by Sierra Industries Ltd., for Textron Aviation 500. Recorded change: Optimal maximum zero fuel weight (MZFW) increase for aircraft modified per STC SA2172NM installation of LONGWING Modification including wing tip extensions, extended pneumatic de-ice boot, increased fuel capacity, and other minor refinements. Snapshot dated June 30, 2026.

FAA-listed holder
Sierra Industries Ltd.
Aircraft configurations
1
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Optimal maximum zero fuel weight (MZFW) increase for aircraft modified per STC SA2172NM installation of LONGWING Modification including wing tip extensions, extended pneumatic de-ice boot, increased fuel capacity, and other minor refinements.

ST09975SC identifies the approval, recorded holder, named aircraft, and modification scope. It does not confirm kit availability, serial-number effectivity, data rights, price, or installation authority.

Applicability

Aircraft named in FAA DRS

Named aircraft: Textron Aviation 500. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Textron Aviation 500A22CE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Textron Aviation 500 model, serial range, and configuration?
  2. 02Which tanks, plumbing, usable-fuel assumptions, and inspections apply?
  3. 03Who can legally supply the design data, kit, instructions, and ICAs?
  4. 04What parts, labor, conformity, and return-to-service work are excluded?

Related fuel systems STCs