SA00055DE

Installation of replacement cabin door. Held by Univair Aircraft Corporation, which holds 29 approved modifications in all. Last revised June 21, 1999. System: cabin, seats and restraints.

What it applies to

Kind of product: Aircraft
Design holder: The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.
Models: PA-18, PA-18A, J3P, PA-11, J3C-65S, J3C-65, J3C-50S, J3C-50, J3C-40, PA-11S, J3F-50S, J3F-60, J3F-60S, J3F-65 (Army L-4D), J3F-65S, J3F-50, J3L-65S, J3L, J3L-65 (Army L-4C), J3L-S
Type certificates: 1A2, 1A2, 695, A-691, A-691, A-691, A-691, A-691, A-691, A-691, A-692, A-692, A-692, A-692, A-692, A-692, A-698, A-698, A-698, A-698
On this site: Piper/Cub Crafters PA-18 46 registered
Piper J-3 Cub 3,806 registered
Piper PA-11 Cub Special 443 registered
Piper PA-18 Super Cub 3,621 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 8, 2026.