# STC SA1158SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Arnav Systems Inc, United States
- Description: Installation of Silver Instrument Fueltron fuel flow system
- Applied: May 1, 1980
- Status date: April 29, 1991
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A-669](https://openairdocs.org/tcds/A-669)
- Certificate PDF: https://openairdocs.org/files/sha256/a1/3f/a13f4f9228f00fb1dcc440c2a49d1ee7ed26ee2c3ed6409d84a6ed266ac5adf8
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8250ECCBDBB8901085256CC10080DF11.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1158SO

## ADs that name it (0)

None.

## Approved models (4)

- The Boeing Company DC3C-R-1830-90C ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3C-S1C3G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3C-S4C4G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3C-SC3G ([TCDS A-669](https://openairdocs.org/tcds/A-669))

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (1)

- April 29, 1991: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/a1/3f/a13f4f9228f00fb1dcc440c2a49d1ee7ed26ee2c3ed6409d84a6ed266ac5adf8)

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