# STC SA111SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Ward Intl Aircraft Service, United States
- Description: 200,000 B.T.U. Janitrol S-200 heater in tail section.
- Status date: April 1, 1973
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-618](https://openairdocs.org/tcds/A-618), [TCDS A-669](https://openairdocs.org/tcds/A-669)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/17C5B05894E14CC685256CC10080DE53.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA111SW

## ADs that name it (0)

None.

## Approved models (2)

- McDonnell Douglas Corporation DC-3 Series ([TCDS A-618](https://openairdocs.org/tcds/A-618))
- McDonnell Douglas Corporation DC-3 Series ([TCDS A-669](https://openairdocs.org/tcds/A-669))

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