SA4-1119
Installation of a PBY-6A tail on a 28-5ACF airplane with American Turbine Engine Company Spec PBY-6A-468 and American Turbine Engine Company Drawings PBY-109, PBY-110, PBY-111, and PBY-112. Held by West-Figueroa Trust, which holds 8 approved modifications in all. Last revised May 8, 2002. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- General Dynamics Corporation
- Models
- 28-5ACF
- Type certificate
- 785
- On this site
- Consolidated Vultee 28 9 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.