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Propellers

STC SA20GL

FAA DRS lists SA20GL as Current · Reissued, held by Ontic Engineering and Manufacturing Inc., for B-N Group BN-2, B-N Group BN-2A, and B-N Group BN-2A-2, and 37 more aircraft configurations. Recorded change: Installation of Woodward Type II electronic propeller synchronizer or synchrophaser system. (G-44A MODIFIED COLEMILL - STC 2-13) (500-A modified - Colemill STC SA340SO). Snapshot dated June 30, 2026.

FAA-listed holder
Ontic Engineering and Manufacturing Inc.
Aircraft configurations
40
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of Woodward Type II electronic propeller synchronizer or synchrophaser system. (G-44A MODIFIED COLEMILL - STC 2-13) (500-A modified - Colemill STC SA340SO).

SA20GL 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: B-N Group BN-2, B-N Group BN-2A, and B-N Group BN-2A-2, and 37 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

B-N Group BN-2A17EUB-N Group BN-2AA17EUB-N Group BN-2A-2A17EUB-N Group BN-2A-20A17EUB-N Group BN-2A-21A17EUB-N Group BN-2A-26A17EUB-N Group BN-2A-27A17EUB-N Group BN-2A-3A17EUB-N Group BN-2A-6A17EUB-N Group BN-2A-8A17EUB-N Group BN-2A-9A17EUBritish Aerospace (Scotland) B.206 Series 2A11EUCessna Aircraft T310Q3A10Cessna Aircraft 310Q3A10Cessna Aircraft T310R3A10Cessna Aircraft 310C3A10Cessna Aircraft 310L3A10Cessna Aircraft 310K3A10Cessna Aircraft 310J3A10Cessna Aircraft 310H3A10Cessna Aircraft 310F3A10Cessna Aircraft 310N3A10Cessna Aircraft 310D3A10Cessna Aircraft 310I3A10Cessna Aircraft 310B3A10Cessna Aircraft 310A (USAF U-3A)3A10Cessna Aircraft T310P3A10Cessna Aircraft 3103A10Cessna Aircraft 310E (USAF U-3B)3A10Cessna Aircraft 310G3A10Cessna Aircraft 310P3A10Cessna Aircraft 320A3A25Cessna Aircraft 320B3A25Cessna Aircraft 320C3A25Cessna Aircraft 320D3A25Cessna Aircraft 320E3A25Cessna Aircraft 320F3A25Cessna Aircraft 3203A25Cessna Aircraft 340A3A25Cessna Aircraft 3403A25

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact B-N Group BN-2 and B-N Group BN-2A, and 38 more aircraft configurations model, serial range, and configuration?
  2. 02Which propeller, governor, spinner, engine, and vibration limits 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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