SA1087WE
AiResearch ATR4125-16 or 86727 aluminum oil cooler. Held by Intermountain Avn INC, which holds 8 approved modifications in all. Last revised January 1, 1961. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Curtiss-Wright Corporation; Curtiss-Wright Corporation; Curtiss-Wright Corporation; Curtiss-Wright Corporation; Curtiss-Wright Corporation
- Models
- C-46 Series, C-46 Series, C-46E, C-46 Series, C-46F
- Type certificates
- 3A2, A-772, A-786, A-789, A-808
- On this site
- Curtiss Wright C-46 8 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.