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

SA4-1165

Installation of Firestone Model DFA-180 or Bodell BMI-2000 wheel in lieu of Firestone 6C5 or Goodrich 613MD wheel (on nose gear). Held by Skybound Manufacturing INC., which holds 19 approved modifications in all. Last revised June 26, 2003. System: landing gear.

What it applies to

Kind of product
Aircraft
Design holder
Multitech Engineering Corporation; Multitech Engineering Corporation; Navion Aircraft Company Ltd.; Navion Aircraft Company Ltd.; Navion Aircraft Company Ltd.; Navion Aircraft Company Ltd.; Navion Aircraft Company Ltd.
Models
D-16A, D-16, Navion D, Navion B, Navion A (L-17C), Navion A (L-17B), Navion (L-17A)
Type certificates
2A1, 2A1, A-782, A-782, A-782, A-782, A-782
On this site
Navion NAVION B 42 registered
Navion NAVION D 5 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.