SA00853AT
Installation of P&W engine model TIB-3 (R985-AN1), Hamilton Std propeller model 2D30 with 6101-12 blades, Beech D-18/C45 cowling, BT-13 wheels and brakes, and fiberglass Wag-Aerowheel pants. Held by Huffstetler Leslie R. Last revised September 5, 1995. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Boeing Airplane Company Wichita Division; Boeing Airplane Company Wichita Division; Boeing Airplane Company Wichita Division; Boeing Airplane Company Wichita Division
- Models
- A75N1 (Navy N2S-1), A75N1 (Army PT-17A), A75N1 (Army PT-17), A75N1 (Navy N2S-4)
- Type certificates
- A-743, A-743, A-743, A-743
- On this site
- Boeing A75 Stearman Kaydet 979 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 22, 2026.