# STC SA1658SO

- Type: Supplemental type certificate
- Status: Current, Surrendered
- Holder: Page AvJet Corp, United States
- Description: Installation of a dual Sperry ADZ800 air data computer system with VN 801 vertical navigation system. Issued 9/13/84.
- Status date: July 9, 2008
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A3WE](https://openairdocs.org/tcds/A3WE)
- Certificate PDF: https://openairdocs.org/files/sha256/17/67/17677e8fa19296ea30cf1afb74dd5161e8f2f789957aba312ea02114823f144e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5C26CB2FD07B607A862574EA005520D3.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1658SO

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 727-100 Series ([TCDS A3WE](https://openairdocs.org/tcds/A3WE))

## What the certificate says

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

## Every issue (1)

- July 9, 2008: Surrendered, Current. [certificate](https://openairdocs.org/files/sha256/17/67/17677e8fa19296ea30cf1afb74dd5161e8f2f789957aba312ea02114823f144e)

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