# STC SA1761GL

- Type: Supplemental type certificate
- Status: Current, Surrendered
- Holder: ABX Air Incorporated, United States
- Description: Installation of Kollsman P/N 35900-A2284 Mach airspeed indicator.
- Applied: April 22, 1992
- Status date: April 17, 2013
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 4A25](https://openairdocs.org/tcds/4A25)
- Certificate PDF: https://openairdocs.org/files/sha256/f0/dd/f0dd0bb8622cc7d15d968e5f186e345f643ecb4884093b9da368ed8c15e40218
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/41268BC2B73BA81686257B79005E3CDE.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA1761GL

## ADs that name it (0)

None.

## Approved models (6)

- McDonnell Douglas Corporation DC-8-61 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- McDonnell Douglas Corporation DC-8-61F ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- McDonnell Douglas Corporation DC-8-62 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- McDonnell Douglas Corporation DC-8-62F ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- McDonnell Douglas Corporation DC-8-63 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- McDonnell Douglas Corporation DC-8-63F ([TCDS 4A25](https://openairdocs.org/tcds/4A25))

## What the certificate says

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

## Every issue (1)

- April 17, 2013: Surrendered, Current. [certificate](https://openairdocs.org/files/sha256/f0/dd/f0dd0bb8622cc7d15d968e5f186e345f643ecb4884093b9da368ed8c15e40218)

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.