# STC SA4-231

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Jay- Dee Aircraft Supply Co, United States
- Description: Installation of auxiliary power unit (Andover type D-2, Model V-32) and associated equipment in baggage compartment.
- Status date: January 1, 1960
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-793](https://openairdocs.org/tcds/A-793)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CB78F33665D2F9B0862570CE006AFC87.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-231

## ADs that name it (0)

None.

## Approved models (1)

- Tracor Flight Systems Inc. 240 Series ([TCDS A-793](https://openairdocs.org/tcds/A-793))

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