STC SA3121SO
FAA DRS lists SA3121SO as Current · Surrendered, held by RT Aerospace Corp, for McDonnell Douglas DC-9-30 Series. Recorded change: Installation of an all tourist class interior reconfiguration of 105 passenger seats. Snapshot dated June 30, 2026.
FAA-listed holder
Aircraft configurations
1
FAA revision date
FAA status
Current · Surrendered
Recorded modification
What the FAA record covers
SA3121SO 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: McDonnell Douglas DC-9-30 Series. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Related cabin and interiors STCs
Installation of passenger interior arrangements. (747-212B).
FAA holder: Flying Tiger Line Inc
One Time Installation of a 18 Passenger Corporate Executive Aircraft Interior.
FAA holder: Gulfstream Aerospace Corporation
Installation of a Custom Interior.
FAA holder: Gulfstream Aerospace Corporation
FAA record reference
- STC number
- SA3121SO
- Product
- Aircraft · Large Multi-Engine
- Country
- United States
- Application date
- July 31, 1991
- Revision date
- June 24, 2008
- CFR references
- Part 21