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Engine and powerplant

STC SA02057SE

FAA DRS lists SA02057SE as Current · Issued, held by Richard Melhoff, for Waco Aircraft ATO. Recorded change: Modification of aircraft and installation of Jacobs L-6MB engine, a Hamilton Standard 2B-20-9 propeller, a Cessna 195 engine ring mounted on a WACO ATO engine mount, and associated accessories and hardware on WACO ATO, serial number A-81. Snapshot dated June 30, 2026.

FAA-listed holder
Richard Melhoff
Aircraft configurations
1
FAA revision date
FAA status
Current · Issued

Recorded modification

What the FAA record covers

Modification of aircraft and installation of Jacobs L-6MB engine, a Hamilton Standard 2B-20-9 propeller, a Cessna 195 engine ring mounted on a WACO ATO engine mount, and associated accessories and hardware on WACO ATO, serial number A-81.

SA02057SE 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: Waco Aircraft ATO. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Waco Aircraft ATOATC 123

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Waco Aircraft ATO 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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