# STC SA1621CE

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Central Air Services, United States
- Description: Restricted category tanker conversion.
- Status date: March 5, 1981
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-762](https://openairdocs.org/tcds/A-762)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A30BB33A8762C6E885256CC10082148C.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1621CE

## ADs that name it (0)

None.

## Approved models (2)

- McDonnell Douglas Corporation C54D-DC (Army C-54D) ([TCDS A-762](https://openairdocs.org/tcds/A-762))
- McDonnell Douglas Corporation C54D-DC (Navy R5D-3) ([TCDS A-762](https://openairdocs.org/tcds/A-762))

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