# STC SA172GL

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Courter, Inc
- Description: Replace differential synchro and switch in Courter flap position indicator, P/N 18-1299-3, with Courter flap asymetry detector kit, P/N 298-1026-01 or -02. (707-100B)
- Status date: December 21, 1978
- Data sheets: 4A21, 4A21, 4A21
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0653D3C6460E362285256CC10083CF84.0001
- Page: https://openairdocs.org/stc/SA172GL

## ADs that name it

None.

## Approved models (3)

- The Boeing Company 707 (TCDS 4A21)
- The Boeing Company 707-100 Long Body (TCDS 4A21)
- The Boeing Company 707-200 (TCDS 4A21)

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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.