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

SA1395SW

Revise fuel and oil system for inverted flight. Held by Spinks M H SR, which holds 2 approved modifications in all. Last revised November 24, 1971. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Cessna Aircraft Company; Cessna Aircraft Company
Models
A150K, A150L
Type certificates
3A19, 3A19
On this site
Cessna A150 232 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.