# STC ST174CH

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: ERDA, Inc., United States
- Description: Installation of ERDA digital seatfone kit, part number 210013, onto Flight Equipment & Engineering Limited (F.E.E.L.) Model "101" series aircraft seatbacks
- Applied: February 9, 1994
- Status date: March 8, 1994
- Product: Aircraft, Large Airplane
- Certification basis: Part 25
- Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE)
- Certificate PDF: https://openairdocs.org/files/sha256/10/fd/10fd26b5824e6f5ce5eeed1057550b877b25ae2c073ef2d219fc62ed9493ceaf
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID107639121220260831154954.0001
- DRS record last changed: August 31, 2026
- Page: https://openairdocs.org/stc/ST174CH

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company DC-9-82 (MD-82) ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))

## What the certificate says

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

## Every issue (1)

- March 8, 1994: Issued, Current. [certificate](https://openairdocs.org/files/sha256/10/fd/10fd26b5824e6f5ce5eeed1057550b877b25ae2c073ef2d219fc62ed9493ceaf)

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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.