# STC ST422SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Delta Airlines Inc
- Description: Installation of single radar altimeter system. (22M 880)
- Status date: January 1, 1960
- Data sheets: 4A27, 4A27
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7EE09A0A55036E3F862570C2006189D5.0001
- Page: https://openairdocs.org/stc/ST422SO

## ADs that name it

None.

## Approved models (2)

- General Dynamics Corporation 22 (TCDS 4A27)
- General Dynamics Corporation 22M (TCDS 4A27)

---
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.