SA4-315
Remove fabric from wings and replace with metal as per attached drawing and description. N89730, Serial No. 8779. Held by Stanke Theodore DBA Stanke'S Aircraft. Last revised November 8, 1957. System: airframe structure.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Cessna Aircraft Company
- Models
- 140
- Type certificate
- A-768
- On this site
- Cessna 140 1,839 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.