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Engine and powerplant

STC SA3-672

FAA DRS lists SA3-672 as Current · Reissued, held by D'Shannon Products Ltd., for Cessna Aircraft 170A and Cessna Aircraft 170B. Recorded change: Installation of Lycoming O-360-A1A, A1D, or B1B engine with McCauley 2D36C14-X/78KM-4 propeller or Lycoming O-360-A1A and A1D engines with Hartzell HC-C2YK-1A/7666A-2 propeller. Data required: Doyn Aircraft, Inc. Drawings: 1000, 1005 Rev. C, 1006 Rev. C, 1009, 1010 Rev. A, 1011, 1012 Rev. A, 1013, 1014, 1015, 1016, 1099, 1100 Rev. B, 1101 Rev. A, 1102, 1103 Rev. A, 1104, 1107, 1150. Drawing Changes Notices: 1005-5A, 1006-8A, 1006-6, 1009-2A, 1199-1A, 1199-2A, and 1199-3A. Snapshot dated June 30, 2026.

FAA-listed holder
D'Shannon Products Ltd.
Aircraft configurations
2
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of Lycoming O-360-A1A, A1D, or B1B engine with McCauley 2D36C14-X/78KM-4 propeller or Lycoming O-360-A1A and A1D engines with Hartzell HC-C2YK-1A/7666A-2 propeller. Data required: Doyn Aircraft, Inc. Drawings: 1000, 1005 Rev. C, 1006 Rev. C, 1009, 1010 Rev. A, 1011, 1012 Rev. A, 1013, 1014, 1015, 1016, 1099, 1100 Rev. B, 1101 Rev. A, 1102, 1103 Rev. A, 1104, 1107, 1150. Drawing Changes Notices: 1005-5A, 1006-8A, 1006-6, 1009-2A, 1199-1A, 1199-2A, and 1199-3A.

SA3-672 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: Cessna Aircraft 170A and Cessna Aircraft 170B. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Cessna Aircraft 170AA-799Cessna Aircraft 170BA-799

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Cessna Aircraft 170A and Cessna Aircraft 170B model, serial range, and configuration?
  2. 02Which powerplant configuration, limits, instruments, and maintenance data 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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