SA442AL
Installation of 8.50x6 4- or 6-ply rated Goodyear or UniRoyal tires. Held by Northland Aviation, which holds 2 approved modifications in all. Last revised November 7, 1973. System: landing gear.
What it applies to
- Kind of product
- Aircraft
- Design holder
- American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.
- Models
- 7GCBC, 7KCAB, 7ECA, 7GCAA
- Type certificates
- A-759, A-759, A-759, A-759
- On this site
- American Champion Aircraft 7 Citabria and Champ 429 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.