# STC SA613SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Avitas Engineering
- Description: Installation of Collins FD-109 flight director system, VHF navigation system, etc., Air Data Computer System including a Servo-pneumatic altimeter, altitude and identification reporting digitizer, and addition of altitude hold mode to the FD-109 flight director, and speed command function to the FD-109 flight director, including automatic throttle system.
- Status date: June 5, 1992
- Data sheets: 4A25, 4A25
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B4E04DBDFD9A23EE85256CC200569EB3.0001
- Page: https://openairdocs.org/stc/SA613SO

## ADs that name it

None.

## Approved models (2)

- McDonnell Douglas Corporation DC-8-21 (TCDS 4A25)
- McDonnell Douglas Corporation DC-8-51 (TCDS 4A25)

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