SA2737WE
Installation of spar strap extension to outboard wing panel. Held by Staggerwing Museum Foundation INC., which holds 123 approved modifications in all. Last revised September 3, 2004. System: airframe structure.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company
- Models
- UC-45J (SNB-5), E18S, JRB-6, TC-45H, C-45H, D18S, E18S-9700, H18, C-45G, TC-45G, G18S, TC-45J
- Type certificates
- A-765, A-765, A-765, A-765, A-765, A-765, A-765, A-765, A-765, A-765, A-765, A-765
- On this site
- Beechcraft E18 58 registered
Beechcraft TC-45 7 registered
Beechcraft UC-45 9 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 21, 2026.