SA937NW
Installation of a Lycoming R-680-13 (E3B) engine and Hamilton Standard 5404 Hub/11C1 blade propeller, with a Stinson V77 oil tank. Held by Jack e Lanning. Last revised May 7, 1980. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Curtiss-Wright Corporation
- Models
- Travel Air 4000
- Type certificate
- ATC 32 Curtiss-Wright
- On this site
- Curtiss Wright TRAVEL AIR 4000 55 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.