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Other aircraft modifications

STC SP04133CH

FAA DRS lists SP04133CH as Current · Issued, held by Wipaire Inc, for McCauley Propeller Systems 4HFR34C. Recorded change: Installation of pitch locks. Snapshot dated June 30, 2026.

FAA-listed holder
Wipaire Inc
Aircraft configurations
1
FAA revision date
FAA status
Current · Issued

Recorded modification

What the FAA record covers

Installation of pitch locks.

SP04133CH 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: McCauley Propeller Systems 4HFR34C. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

McCauley Propeller Systems 4HFR34CP3NE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact McCauley Propeller Systems 4HFR34C model, serial range, and configuration?
  2. 02Which configuration, parts, installation data, limitations, and ICAs 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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