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Flight controls

STC SA4-977

FAA DRS lists SA4-977 as Current · Amended, held by Univair Aircraft Corporation, for New Piper Aircraft PA-16, New Piper Aircraft PA-18, and New Piper Aircraft PA-19 (Army L-18C), and 8 more aircraft configurations. Recorded change: Installation of Fiberglass rudder post mount for either Grimes or Whelen WRM rotating beacons. Snapshot dated June 30, 2026.

FAA-listed holder
Univair Aircraft Corporation
Aircraft configurations
11
FAA revision date
FAA status
Current · Amended

Recorded modification

What the FAA record covers

Installation of Fiberglass rudder post mount for either Grimes or Whelen WRM rotating beacons.

SA4-977 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: New Piper Aircraft PA-16, New Piper Aircraft PA-18, and New Piper Aircraft PA-19 (Army L-18C), and 8 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

New Piper Aircraft PA-161A1New Piper Aircraft PA-181A2New Piper Aircraft PA-19 (Army L-18C)1A2New Piper Aircraft PA-201A4New Piper Aircraft PA-221A6New Piper Aircraft PA-252A8New Piper Aircraft PA-11A-691New Piper Aircraft PA-12A-780New Piper Aircraft PA-14A-797New Piper Aircraft PA-15A-800New Piper Aircraft PA-17A-805

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact New Piper Aircraft PA-16 and New Piper Aircraft PA-18, and 9 more aircraft configurations 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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