SA1521WE
Installation of metal covering on ailerons, elevators and rudder. Held by Kal Aero Service INC. Last revised June 29, 1983. System: flight controls.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Rockwell International Corporation; Rockwell International Corporation; Rockwell International Corporation; Rockwell International Corporation; Rockwell International Corporation; Rockwell International Corporation; Rockwell International Corporation
- Models
- AT-6 (SNJ-2), AT-6A (SNJ-3), AT-6B, AT-6C (SNJ-4), T-6G, AT-6F (SNJ-6), AT-6D (SNJ-5)
- Type certificates
- A-2-575, A-2-575, A-2-575, A-2-575, A-2-575, A-2-575, A-2-575
- On this site
- North American AT-6 Texan 228 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.