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Cabin and interiors

STC ST09777AC

FAA DRS lists ST09777AC as Current · Reissued, held by United Airlines Inc, for Boeing 737-900 Series and Boeing 737-900ER Series. Recorded change: 737-900/900ER Slimline Lavatory and Economy Class Seat Modification (HIC Compliant). Snapshot dated June 30, 2026.

FAA-listed holder
United Airlines Inc
Aircraft configurations
2
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

737-900/900ER Slimline Lavatory and Economy Class Seat Modification (HIC Compliant).

ST09777AC 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 737-900 Series and Boeing 737-900ER Series. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Boeing 737-900 SeriesA16WEBoeing 737-900ER SeriesA16WE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Boeing 737-900 Series and Boeing 737-900ER Series model, serial range, and configuration?
  2. 02Which layout, materials, flammability evidence, and weight changes 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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