What are the requirements for a Battery-based Emergency Power Unit (BEPU) to be identified with ETSO marking?

A BEPU manufactured on or after the date of this ETSO must meet the requirements given in this ETSO, including the minimum performance standard in Appendix 1, the environmental standard in Appendix 1 chapter 2, and applicable software and airborne electronic hardware requirements per CS-ETSO Subpart A.

Where are the environmental standard and failure condition classification for a BEPU specified?

The environmental standard is stated in Appendix 1, chapter 2, of this ETSO. The failure condition classification is per CS-ETSO, Subpart A, paragraph 2.4.

What is the applicability date for the ETSO-C174 A1 requirements?

The requirements apply to BEPUs manufactured on or after the date of this ETSO.

ETSO-C174 A1

Q: Which battery standards are acceptable for the battery used in a BEPU?

The battery must meet the requirements of ETSO-C173 'Nickel-Cadmium and Lead Acid Batteries' or any other battery standards acceptable to the Agency.

Q: What information must be indicated on the product label of a BEPU?

The product label shall indicate battery capacity (e.g., 20 Amp-Hour (Ah)), nominal voltage, and battery chemistry.

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ETSO-C174 A1

ED Decision 2013/012/R

Battery-based Emergency Power Unit (BEPU)

1 Applicability

This ETSO gives the requirements which Battery based Emergency Power Units (BEPU) that are manufactured on or after the date of this ETSO must meet in order to be identified with applicable ETSO marking.

2 Procedures

2.1 General

Applicable procedures are detailed in CS-ETSO, Subpart A.

2.2 Specific

None.

3 Technical conditions

3.1 Basic

3.1.1 Minimum performance standard

Standards are given in Appendix 1.

Note: The battery used in the BEPU must meet the requirements of ETSO-C173 "Nickel-Cadmium and Lead Acid Batteries" or any other battery standards acceptable to the Agency.

3.1.2 Environmental standard

As stated in Appendix 1, chapter 2, of this ETSO.

3.1.3 Software

See CS-ETSO, Subpart A, paragraph 2.2.

3.1.4 Airborne electronic hardware

See CS-ETSO, Subpart A, paragraph 2.3.

3.2 Specific

3.2.1 Failure condition classification

See CS-ETSO, Subpart A, paragraph 2.4.

4 Marking

4.1 General

Marking is detailed in CS-ETSO, Subpart A, paragraph 1.2.

4.2 Specific

Product label shall indicate:

— battery capacity (e.g. 20 Amp-Hour (Ah)),

— nominal voltage,

— battery chemistry.

5 Availability of referenced document

See CS-ETSO, Subpart A, paragraph 3

[Amdt ETSO/3]

[Amdt ETSO/8]

Details

Source-Title: ETSO-C174 A1 View latest amendments

Erulesid: ERULES-1963177438-9188 Compare versions

Domain: Initial airworthiness

Amendedby: Amendment 8

Applicabilitydate: 15 July, 2013

Entryintoforcedate: 15 July, 2013

Regulatorysource: ED Decision 2013/012/R Navigate

Regulatorysubject: CS-ETSO

Typeofcontent: CS (Certification specification)

Origin: EASA

Category: EAR

ETSO-C174 A1

Battery-based Emergency Power Unit (BEPU)

Details

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