# STC SR00307BO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Alakai Technologies, United States
- Description: Installation of Passive Engine Trend Monitoring System (ETMS) in AS-350 series aircraft
- Applied: September 10, 2010
- Status date: January 28, 2011
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 27
- Data sheets: [TCDS H9EU](https://openairdocs.org/tcds/H9EU)
- Certificate PDF: https://openairdocs.org/files/sha256/aa/ce/aace7973857608fc65a78e3ca56fa8558d8c1eb8f31f9b2a86902c59ddde5cb6
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/00808EC48696AE4F8625783800658B19.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SR00307BO

## ADs that name it (0)

None.

## Approved models (7)

- Eurocopter France AS-350B ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Eurocopter France AS-350B1 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Eurocopter France AS-350B2 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Eurocopter France AS-350BA ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Eurocopter France AS-350C ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Eurocopter France AS-350D ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Eurocopter France AS-350D1 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))

## 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.

Part 27 of the Federal Aviation Regulations.

* SEE PAGE 3

Installation of Passive Engine Trend Monitoring System (ETMS) in AS-350 series aircraft in accordance with Alakai Technologies Master Document List, Document No. 20-001-MDL-ST1431BO-R, Revision 1.1a, dated 1/12/2011, or later FAA-approved revision.

No Rotorcraft Flight Manual Supplement (RFMS) is required for this modification.

1. Maintenance must be in accordance with Instructions for Continued Airworthiness (ICA), Alakai Technologies Document 20- 001-ICA-ST1431BO-R, Revision 1.05, dated January 21, 2011 or later FAA accepted revision. The ICA must be made available to the operator at the time of installation.

2. Compatibility of this design with previously approved modifications must be determined by the installer.

Alakai Technologies 22 Piazza Lane Hopkinton, Massachusetts 01728 H9EU Make : Eurocopter France Model : AS350C, AS350D, AS350D1, AS350B, AS350B1, AS350B2, AS350BA Date of application : September 10, 2010

Date of issuance : January 28, 2011

( Signature) Robert G. Mann Manager Boston Aircraft Certification Office

( Title)

FAA Form 8110-2-1(10-69) Page 2 of 3

Certification Basis:

Based on 14 CFR §§ 2.115 and 21.101, and the FAA policy for changes that are not significant in FAA Order 8110.48, the certification basis for the Eurocopter Mode AS-350 series helicopters is as follows:

a. The type certification basis for the Eurocopter Model AS-350 series helicopters is shown on TCDS H9EU for parts not changed or not affected by this change.

b. The certification basis for parts changed or affected by the change since the reference date of the application, September 10, 2010, is based upon part 27 as amended by 27-45. Based on 14 CFR §§ 2.115 and 21.101, and the FAA policy for changes that are not significant in FAA Order 8110.48, the certification basis for this modification was determined to be:

Regulations at the latest amendment 27-0 through 27-45

27.1, 27.25, 27.301, 27.303, 27.307, 27.561, 27.603, 27.605, 27.613, 27.625, 27.1301, 27.1309, 27.1351, 27.1357, 27.1365,

27.1529

Regulations at an intermediate amendment None

Regulations at the amendment level in TCDS H9EU None

If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

------------------------------------------------------------- END ---------------------------------------------------------

## Every issue (1)

- January 28, 2011: Issued, Current. [certificate](https://openairdocs.org/files/sha256/aa/ce/aace7973857608fc65a78e3ca56fa8558d8c1eb8f31f9b2a86902c59ddde5cb6)

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