# STC SE09908AC

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: RAM Aircraft Limited Partnership, United States
- Description: Conversion of Continental Motors, Inc. (CMI) model TSIO-520-UB to RAM model IO-550-B-RA engine
- Applied: June 23, 2020
- Status date: July 9, 2020
- Product: Engine
- Certification basis: Part 21, Part 33
- Data sheets: [TCDS E8CE](https://openairdocs.org/tcds/E8CE)
- Certificate PDF: https://openairdocs.org/files/sha256/b5/d3/b5d3e5b190fb8989133df02f83f5c7dcbba282585ff2d98ea7c0faaa080b0b62
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B0A5D8446B578016862585E0003E625F.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SE09908AC

## ADs that name it (0)

None.

## Approved models (1)

- Continental Aerospace Technologies Inc. TSIO-520-UB ([TCDS E8CE](https://openairdocs.org/tcds/E8CE))

## 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.

FAA Form 8110-2 (4/20) SUPERSEDES PREVIOUS EDITION Page 1 of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number:

Part of .

Date Reissued: Date of Application: June 23, 2020 Date of Issuance: July 09, 2020 Date Amended:

SE09908AC RAM Aircraft, LP 7505 Karl May Drive Waco, Texas 76708 E8CE Continental Motors, Inc.

TSIO-520-UB Conversion of Continental Motors, Inc. (CMI) model TSIO-520-UB to RAM model IO-550-B-RA engine in accordance with RAM Master Drawing List 2973. Revision B, dated January 24, 2020, or later FAA approved revision.

The RAM model IO-550-B-RA engine is identical to and has the same rating, limitations, and installation interfaces as CMI model IO-550-B engine. The Instructions for Continued Airworthiness are contained in RAM document number 2974, Revision IR dated December 11, 2019, or later FAA approved revision.

Jim Grigg Manager, Fort Worth ACO Branch Compliance & Airworthiness Division Aircraft Certification Service

Certification Basis: Continuation Sheet 33 Federal Aviation Regulations 3

FAA Form 8110-2 (4/20) SUPERSEDES PREVIOUS EDITION Page 2 of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SE09908AC

FAA Form 8110-2 (4/20) Page ___ of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SE09908AC Certification Basis:

The certification basis for Teledyne Continental Motors IO-520-UB engine is shown on TCDS E8CE 1CAR 13 effective June 15, 1956, as amended by 13-1 through 13-6 for parts not changed or not affected by the change.

The certification basis for parts changed or affected by the change since the reference date of application, March 18, 2019, is based upon 14 CFR Part 33 as amended by Amendment 33-8.

33.1, 33.3, 33.4, 33.5, 33.7, 33.8, 33.11, 33.14, 33.15, 33.17, 33.19, 33.21, 33.23, 33.25, 33.29, 33.31, 33.33,

33.35, 33.37, 33.39.

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## Every issue (1)

- July 9, 2020: Issued, Current. [certificate](https://openairdocs.org/files/sha256/b5/d3/b5d3e5b190fb8989133df02f83f5c7dcbba282585ff2d98ea7c0faaa080b0b62)

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