# STC SA7831SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Marathon Power Tech Co, United States
- Description: Installation of dual Marathon TSP-280 nickel cadmium batteries.
- Applied: November 28, 1988
- Status date: May 19, 1994
- Product: Aircraft, Small/Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A16EU](https://openairdocs.org/tcds/A16EU)
- Certificate PDF: https://openairdocs.org/files/sha256/2e/70/2e706985039d196882de9c014346f957c4d9cc9133662b5913d70e447814077a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/53493E424838C83B85256CC20056A4DA.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA7831SW

## ADs that name it (0)

None.

## Approved models (5)

- RUAG Aerospace Services GmbH Dornier 228-100 ([TCDS A16EU](https://openairdocs.org/tcds/A16EU))
- RUAG Aerospace Services GmbH Dornier 228-101 ([TCDS A16EU](https://openairdocs.org/tcds/A16EU))
- RUAG Aerospace Services GmbH Dornier 228-200 ([TCDS A16EU](https://openairdocs.org/tcds/A16EU))
- RUAG Aerospace Services GmbH Dornier 228-201 ([TCDS A16EU](https://openairdocs.org/tcds/A16EU))
- RUAG Aerospace Services GmbH Dornier 228-202 ([TCDS A16EU](https://openairdocs.org/tcds/A16EU))

## 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.

*sl£G4&cti£i& tinted £tatts of aracrica Bepartment ofCransportation—jptdtral dotation administration topplemental 'Cgpe Certificate *Sbumve<r' SA7831SW Marathon Power Technologies Company 8301 Imperial Drive Waco, Texas 76712-6588 ,<^^/i^j4l<j^^ 23 Federal Aviation A16EU Cornier 228-100, -101, -200, -201, -202.

Installation of dual Marathon TSP-280 Nickel Cadmium batteries in a Dornier 228 aircraft, in accordance with Marathon Power Technologies drawing 31823-001 revision B, dated May 23, 1989, or latter FAA approved revision.

Compatibility of this modification with previously installed equipment must be determined by installer.

^»'77M^^ aA^: November 28, 1988 June 7, 1990 : 5/19/94 _/ ti'n 4j &i£< S'i {/ . .(Signature) Mark R. Schilling, Manager Special Certification Office (Title)

This certificate may be transferred in accordance with F'AR 21.17.

**FAAFOKM 81 10-2(10-68)**

to (Name of transferee) (Address of transferee) (Number and street) (City, State, and ^IP code) from (Name of grantor) (Print or type) .

(Address of grantor) {Number and street) I (jtr. Sla/e. and ^IP code) Extent of Authority (if licensing agreement): _ Date of Transfer:.

Signature of grantor (In ink):

## Every issue (1)

- May 19, 1994: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/2e/70/2e706985039d196882de9c014346f957c4d9cc9133662b5913d70e447814077a)

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