SA3239CH
Installation of modified propeller blades. Held by Tri-State Aviation, INC, which holds 3 approved modifications in all. Last revised December 31, 2014. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Cal Pacific Airmotive Inc.; Cal Pacific Airmotive Inc.; Cal Pacific Airmotive Inc.
- Models
- Army P-51C, Army P-51D, Army P-51K
- Type certificates
- LTC-11, LTC-11, LTC-11
- 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.