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

SA1113SW

Installation of extended nose with baggage compartment of 130 lbs capacity. Held by George D. Merrell, which holds 13 approved modifications in all. Last revised November 22, 1998. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Piper Aircraft Inc.; Piper Aircraft Inc.
Models
PA-30, PA-39
Type certificates
A1EA, A1EA
On this site
Piper PA-30 Twin Comanche 879 registered
Piper PA-39 Twin Comanche C/R 82 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 7, 2026.