The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · amended

ST00698WI

Reduction in the maximum seating configuration from 10 to 9 by removal of the seat belt from the forward lavatory passenger seat and installing a placard 'DO NOT OCCUPY DURING TAKE-OFF AND LANDING' above the seat back. One-Time only STC for S/N 465-42. Held by Executive Aircraft Corporation, which holds 2 approved modifications in all. Last revised September 28, 1998. System: cabin, seats and restraints.

What it applies to

Kind of product
Aircraft
Design holder
Sabreliner Corporation
Models
NA-265-65
Type certificate
A2WE
On this site
Rockwell International Corp NA-265 33 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 20, 2026.