SA8604SW
Increase maximum takeoff weight to 6390 pounds and maximum landing weight to 6075 pounds. RAM 335 hp engines, RAM p/n 1498-3 intercooler scoop and RAM vortex generators must be installed per STC SA8055SW. Held by Ram Aircraft Limited Partnership, which holds 174 approved modifications in all. Last revised October 8, 2001. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Cessna Aircraft Company; The Cessna Aircraft Company
- Models
- 340, 340A
- Type certificates
- 3A25, 3A25
- On this site
- Cessna 340 707 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 20, 2026.