What marking is required on at least one major component of a fuel, oil, and hydraulic pressure instrument under ETSO-C47a?

At least one major component must be marked permanently and legibly with all the information provided for in SAE AS408C, Section 3.2 (except paragraph 3.2.b).

ETSO-C47a A1

Q: What minimum performance standard must fuel, oil, and hydraulic pressure instruments meet to be eligible for ETSO-C47a marking?

They must meet the standards in SAE AS 408C 'Pressure Instruments - Fuel, Oil and Hydraulic' from July 1, 2001, unless otherwise specified by Appendix 1 to ETSO-C47a.

Q: How must environmental testing of fuel, oil, and hydraulic pressure instruments be conducted under ETSO-C47a?

Testing must be in accordance with SAE AS408C section 7, and see CS-ETSO, Subpart A, paragraph 2.1 for environmental test procedures.

Q: What is the failure condition classification for the function defined in paragraph 3.1.1 of ETSO-C47a, and what design assurance level is required?

Failure of the function is a major failure condition, and the applicant must develop the system to at least the design assurance level commensurate with this failure condition.

Q: What additional marking must be applied to fuel, oil, and hydraulic pressure instruments under ETSO-C47a?

Mark 'Fire resistant' or 'Fireproof' information legibly and permanently.

Q: What software development requirements apply if a fuel, oil, and hydraulic pressure instrument includes a digital computer?

See CS-ETSO, Subpart A, paragraph 2.2 for software development.

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ETSO-C47a A1

ED Decision 2013/012/R

Pressure Instruments – Fuel, Oil and Hydraulic

1 Applicability

This ETSO gives the requirements which fuel, oil and hydraulic pressure instruments that are manufactured on or after the date of this ETSO must meet in order to be identified with the 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 set forth in the SAE Aerospace Standard (AS) document: SAE AS 408C “Pressure Instruments - Fuel, Oil and Hydraulic” from July 1, 2001 unless otherwise specified by Appendix 1 to this ETSO.

3.1.2 Environmental standard

Testing fuel, oil, and hydraulic pressure instruments must be in accordance with SAE AS408C section 7 and see CS-ETSO, Subpart A, paragraph 2.1, for environmental test procedures.

3.1.3 Software

If fuel, oil, and hydraulic pressure instrument includes a digital computer, see CS-ETSO, Subpart A, paragraph 2.2, for software development.

3.1.4 Airborne electronic hardware

See CS-ETSO, Subpart A, paragraph 2.4.

3.2 Specific

3.2.1 Failure condition classification

See CS-ETSO, Subpart A, paragraph 2.4.

Failure of the function defined in paragraph 3.1.1 of this ETSO has been determined to be a major failure condition. The applicant must develop the system to at least the design assurance level commensurate with this failure condition.

4 Marking

4.1 General

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

4.2 Specific

a) At least one major component of the fuel, oil, and hydraulic pressure instrument shall be marked permanently and legibly with all the information as provided for in SAE AS408C, Section 3.2 (except paragraph 3.2.b).

b) Mark “Fire resistant” or “Fireproof” information legibly and permanently

5 Availability of referenced document

See CS-ETSO, Subpart A, paragraph 3.

[Amdt ETSO/3]

[Amdt ETSO/8]

Details

Source-Title: ETSO-C47a A1 View latest amendments

Erulesid: ERULES-1963177438-9174 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-C47a A1

Pressure Instruments – Fuel, Oil and Hydraulic

Details

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