# STC SA2-7

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Sierra Industries Inc, United States
- Description: Installation of heater and 200-ampere generator. Approved for installation on serial number 6313 ONLY.
- Status date: December 1, 1999
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-669](https://openairdocs.org/tcds/A-669)
- Certificate PDF: https://openairdocs.org/files/sha256/f5/e1/f5e108a45483a24cc3ceb3420da0cda236499788129a741f3227806fedf483af
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8140889AD29FC0DC85256CC10083D4CA.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2-7

## ADs that name it (0)

None.

## Approved models (1)

- McDonnell Douglas Corporation DC3A-S1C3G ([TCDS A-669](https://openairdocs.org/tcds/A-669))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

®f .Anwrita ni ^Transportation - .Sjeheral ^btattnit (Esrttftcate SA2-7 Sierra Industries, Inc., a Texas Corporation Garner Field Road Uvalde, TX 78801 Bulletin 669 , , .

McDonnell Douglas Corp.

DC3A-S1C3G Installation of heater and 200-ampere generator.

This modification limited to Douglas Model DC3A-S1C3G Serial No. 6313, Registration Ho. H88B7I.

24, 1956 .- July 24, 1956 December 01, 1999 .- July 13, 1967 Revision 1 Michele M. Owsley, Manager Airplane Certification Office, Southwest Region S.' Arty jlterjtlon of this certificate by a fine of not fKCfedtng $1,000, or Iftprlaonment not fxcsfdlnq 3 y«rj, or both FAA Form 0110-2410-68) Paga 1 of 2 This certificate aay fc* tfansferred In at^prdance wJCft FAfl 21-17.

INSTRUCTIONS1 The transfer rndorsemtni below may be used 10 notify the appropriate FAA Regional Office of rhe transfer of this Suppleim-mal Type (JeniJiraie.

The FAA will reissue [he (militate in thr name of the transferee and forward it to him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address vj transferee) lintb/T and itrrrff C\ly, Stair, and ZIP code from (Name of grantor) (Print or type).

(Address of grantor) (Xumbfi and ll'fft) I City, Stalt. and ^IP icdcf Extent of Authority (if licensing agreement):.

Signature of grantor (in ink):

**C FAA AC 69-5538**

## Every issue (1)

- December 1, 1999: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/f5/e1/f5e108a45483a24cc3ceb3420da0cda236499788129a741f3227806fedf483af)

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