# STC SA173SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Ward Intl Aircraft Service, United States
- Description: Battery relocation to inverter well and inverter relocation in compartment forward of nose.
- Status date: April 1, 1973
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 2A15](https://openairdocs.org/tcds/2A15)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/ADB3DE145E4CF19985256CC10083CFB3.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA173SW

## ADs that name it (0)

None.

## Approved models (1)

- Lockheed Aircraft Corporation 1329 Series ([TCDS 2A15](https://openairdocs.org/tcds/2A15))

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