SA1072NW
Increase of zero fuel weight to131,000 pounds for aircraft complying complying with GD Convair strength and operating restrictions report ZS-22-300, Rev 3. This STC is limited to aircraft modified per STC Number SA1071NW. Held by Lost Birds Aviation Historical Society & Museum, which holds 2 approved modifications in all. Last revised July 2, 2002. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Tracor Flight Systems Inc.
- Models
- 22
- Type certificate
- 4A27
- 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.