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Rotorcraft modifications

STC SR12148LA

FAA DRS lists SR12148LA as Current · Issued, held by Extex Engineered Products, for Bell Helicopter Textron 412 and Bell Helicopter Textron 412EP. Recorded change: Installation of modified configurations of the Bell Helicopter Textron (BHT) Model 412 “Arm and Bearing Assembly”. Snapshot dated June 30, 2026.

FAA-listed holder
Extex Engineered Products
Aircraft configurations
2
FAA revision date
FAA status
Current · Issued

Recorded modification

What the FAA record covers

Installation of modified configurations of the Bell Helicopter Textron (BHT) Model 412 “Arm and Bearing Assembly”.

SR12148LA 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: Bell Helicopter Textron 412 and Bell Helicopter Textron 412EP. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Bell Helicopter Textron 412H4SWBell Helicopter Textron 412EPH4SW

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Bell Helicopter Textron 412 and Bell Helicopter Textron 412EP model, serial range, and configuration?
  2. 02Which configuration, limitations, installation data, 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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