# STC SA1056SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Lockheed Martin Aeronautics Company, United States
- Description: Increase in zero fuel weight from126,790 lbs. to 128,790 lbs. With pylon tanks on and 125,000 lbs. To127,000 lbs. without pylon tanks.
- Status date: February 10, 1989
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A1SO](https://openairdocs.org/tcds/A1SO)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1ADDDB91D979C6A685256CC10080DD0E.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1056SO

## ADs that name it (0)

None.

## Approved models (1)

- Lockheed Aircraft Corporation 382G ([TCDS A1SO](https://openairdocs.org/tcds/A1SO))

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