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Electrical systems

STC ST22BO

FAA DRS lists ST22BO as Current · Amended, held by Whelen Engineering Co Inc, for Cessna Aircraft 550, Cessna Aircraft S550, and Cessna Aircraft 560. Recorded change: Replacement of Grimes power supply P/N 60-2799-1 and position light P/N's 30-1085-15/-16 with Whelen power supply P/N 01-0790101-04 and position light P/N's 01-790159-(). Snapshot dated June 30, 2026.

FAA-listed holder
Whelen Engineering Co Inc
Aircraft configurations
3
FAA revision date
FAA status
Current · Amended

Recorded modification

What the FAA record covers

Replacement of Grimes power supply P/N 60-2799-1 and position light P/N's 30-1085-15/-16 with Whelen power supply P/N 01-0790101-04 and position light P/N's 01-790159-().

ST22BO 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 550, Cessna Aircraft S550, and Cessna Aircraft 560. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Cessna Aircraft 550A22CECessna Aircraft S550A22CECessna Aircraft 560A22CE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Cessna Aircraft 550 and Cessna Aircraft S550, and 1 more aircraft configuration model, serial range, and configuration?
  2. 02Which load analysis, wiring changes, protection, and limitations 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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