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

SA3814NM

Installation of BAS, Inc. tail pull handle in the aft fuselage. Held by Bas INC, which holds 13 approved modifications in all. Last revised December 2, 2010. System: airframe structure.

What it applies to

Kind of product
Aircraft
Design holder
The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company
Models
172C, 172D, 172E, 172P, 172B, 172I, 172A, 172, 172G, 172H (USAF T-41A), 172F (USAF T-41A), 172K, 172M, 172N, 172Q, 172L, 175, 175A, 175B, 175C, 170, 170A, 170B
Type certificates
3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A17, 3A17, 3A17, 3A17, A-799, A-799, A-799
On this site
Cessna 170 2,085 registered
Cessna 172 Skyhawk 20,676 registered
Cessna 175 Skylark 925 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.