# STC SA4-582

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: D Napier & Son Ltd, United Kingdom
- Description: Napier Eland 504 turboprop engines with deHavilland PD216/466 propellers with XPR5662950SA-124 or PPR626950SA-124 blades.
- Status date: January 1, 1960
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 6A6](https://openairdocs.org/tcds/6A6)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/34BB5F706AE0E1C2862570D0007B9298.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-582

## ADs that name it (0)

None.

## Approved models (2)

- Tracor Flight Systems Inc. 340 ([TCDS 6A6](https://openairdocs.org/tcds/6A6))
- Tracor Flight Systems Inc. 440 Military C-131E ([TCDS 6A6](https://openairdocs.org/tcds/6A6))

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