ST157RM
Installation of dual lounge seats using Branson Aircraft Drawing No. 9028, Rev A, dtd 10/23/78, or later FAA approved revision; or using Aviation Fabricators STC Drawing List AF-248, dtd 12/21/00, FAA approved April 3, 2001, or later FAA approved revision. Held by Aviation Fabricators INC, which holds 92 approved modifications in all. Last revised April 19, 2001. System: cabin, seats and restraints.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Cessna Aircraft Company
- Models
- 550
- Type certificate
- A22CE
- On this site
- Cessna 550 Citation II 500 registered
- The FAA's record
- On the FAA's site
What an approved modification is
A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.
Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 21, 2026.