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Other aircraft modifications

STC ST497CH

FAA DRS lists ST497CH as Current · Reissued, held by Monogram Systems, for Boeing 777-200 Series. Recorded change: Installation of Envirovac toilets P/N 7900101 (L/H) and P/N 7900102 (R/H). Snapshot dated June 30, 2026.

FAA-listed holder
Monogram Systems
Aircraft configurations
1
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of Envirovac toilets P/N 7900101 (L/H) and P/N 7900102 (R/H).

ST497CH 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: Boeing 777-200 Series. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Boeing 777-200 SeriesT00001SE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Boeing 777-200 Series 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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