SA4504NM
Installation of an Intercooler in the air induction system of both engines. (T337G S/N P3370001 - P3370292 EXCEPT P3370109 AND P3370196) (P337H S/N P3370293 - P3370356 AND P3370196). Held by Tc Skyrocket LLC, which holds 8 approved modifications in all. Last revised November 10, 2009. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Cessna Aircraft Company; Cessna Aircraft Company
- Models
- P337H, T337G
- Type certificates
- A6CE, A6CE
- On this site
- Cessna P337 33 registered
Cessna T337 193 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 5, 2026.