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Flight controls

STC SA1521CE-D

FAA DRS lists SA1521CE-D as Current · Reissued, held by Honeywell International Inc, for Textron Aviation 414A and Textron Aviation 421C. Recorded change: Installation of King KFC 250 flight control system (3 axis) using 3-inch or 4-inch indicators. Snapshot dated June 30, 2026.

FAA-listed holder
Honeywell International Inc
Aircraft configurations
2
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of King KFC 250 flight control system (3 axis) using 3-inch or 4-inch indicators.

SA1521CE-D 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 414A and Textron Aviation 421C. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Textron Aviation 414AA7CETextron Aviation 421CA7CE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Textron Aviation 414A and Textron Aviation 421C model, serial range, and configuration?
  2. 02Which control configuration, rigging, limitations, 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?

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