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Other aircraft modifications

STC SE5511NM

FAA DRS lists SE5511NM as Current · Reissued, held by Bell Helicopter Textron Inc., for Rolls-Royce 250-C20, Rolls-Royce 250-C20B, and Rolls-Royce 250-C20C (T63-A-720), and 8 more aircraft configurations. Recorded change: Installation of compressor discharge pressue (PC) valve. Snapshot dated June 30, 2026.

FAA-listed holder
Bell Helicopter Textron Inc.
Aircraft configurations
11
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of compressor discharge pressue (PC) valve.

SE5511NM 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: Rolls-Royce 250-C20, Rolls-Royce 250-C20B, and Rolls-Royce 250-C20C (T63-A-720), and 8 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Rolls-Royce 250-C20E4CERolls-Royce 250-C20BE4CE
Rolls-Royce 250-C20C (T63-A-720)E4CE
Rolls-Royce 250-C20FE4CE
Rolls-Royce 250-C20JE4CE
Rolls-Royce 250-C20RE4CE
Rolls-Royce 250-C20R/1E4CE
Rolls-Royce 250-C20R/2E4CE
Rolls-Royce 250-C20R/4E4CE
Rolls-Royce 250-C20SE4CE
Rolls-Royce 250-C20WE4CE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Rolls-Royce 250-C20 and Rolls-Royce 250-C20B, and 9 more aircraft configurations 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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