What is CS 27.777(a) related to?

CS 27.777(a) states that cockpit controls must be located to provide convenient operation and prevent confusion and inadvertent operation.

What is the purpose of a compliance matrix according to EASA CS-27 regulations?

The compliance matrix should provide essential information to understand the relationship between design items, applicable certification specifications, test objectives, means of compliance, and deliverables.

What does CS 27.1302(a) require for small rotorcraft?

CS 27.1302(a) requires that all controls and information necessary to accomplish tasks must be provided.

What is the applicability date for the ED Decision 2021/010/R regarding compliance matrices for small rotorcraft (CS-27)?

The applicability date is 17 June 2021.

According to CS 27.1302(b)(1), how should controls and information be presented to crew members?

According to CS 27.1302(b)(1), controls and information intended for use by crew members must be presented in a clear and unambiguous form, at a resolution and with a precision appropriate to the task.

What elements should be included in a compliance matrix for small rotorcraft under CS-27?

The compliance matrix should include design items, applicable certification specifications, test objectives, means of compliance (MoC), and deliverables.

GM2 27.1302 Examples of compliance matrices

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ED Decision 2021/010/R

The compliance matrix developed by the applicant should provide the essential information in order to understand the relationship between the following elements:

— the design items,

— the applicable certification specifications,

— the test objectives,

— the means of compliance, and

— the deliverables.

The two matrices below are provided as examples only. The applicant might present the necessary information through any format that meets the above objectives.

An example with a design item entry:

Function	Sub-function	Focus	CS reference	CS description	Assessed dimension	MoC	Reference to the related deliverable
Electronic checklist (ECL) function	Display electronic checklist (ECL)	Electronic checklist quick access keys (ECL QAKs)	CS 27.777(a)	The cockpit controls must be: (a) located so in order to provide convenient operation and to prevent confusion and inadvertent operation;	Assess the ECL QAKs location for convenient operation and prevention of inadvertent operation.	MoC8 HFs campaign #2 Scenario #4	HFs Test Report XXX123
			CS 27.777(b)	The cockpit controls must be: (b) located and arranged with respect to the pilot seats so that there is full and unrestricted movement of each control without interference from the cockpit structure or the pilot clothing when pilots from 1.57 m (5ft 2in) to 1.83 m (6 ft) in height are seated.	Assess accessibility to control the ECL QAKs.	MoC4 HFs Reachability Analysis MoC5 HFs Reachability and Accessibility Campaign	HFs Reachability and Accessibility Assessment Report XXX123
			[…]	[…]	[…]	[…]	[…]
			CS 27.1302(a)	All the controls and information necessary to accomplish these tasks must be provided;	Assess that appropriate controls are provided in order to display ECL.	MoC1 ECL implementation description for XXXX	ECL implementation description document for XXXX
			CS 27.1302(b)(1)	(b) All the controls and information required by paragraph (a), which are intended for use by the crew members, must: (1) be presented in a clear and unambiguous form, at a resolution and with a precision appropriate to the task;	Assess the appropriateness of the ECL QAKs labels.	MoC8 HFs campaign #4 Scenario #1	HFs Test Report XXX345

Another example with a certification specification entry:

CS reference	CS description	Focus	Assessed dimension	MoC	Reference to the related deliverable
CS 27.777(a)	The cockpit controls must be: (a) Located so in order to provide convenient operation and to prevent confusion and inadvertent operation;	All cockpit controls	Assess the locations of all cockpit controls for convenient operation and prevention of inadvertent operation.	MoC8 All HFs simulator evaluations	HFs Test Reports XXX123 XXX456 XXX789
CS 27.777(a)		ECL QAKs	Assess the location of the ECL QAKs for convenient operation and prevention of inadvertent operation.	MoC8 HFs campaign #2 Scenario #4	HFs Test Report XXX123
CS 27.777(b)	The cockpit controls must be: (b) located and arranged with respect to the pilot seats so that there is full and unrestricted movement of each control without interference from the cockpit structure or the pilot clothing when pilots from 1.57 m (5ft 2in) to 1.83 m (6ft) in height are seated.	All cockpit controls	Assess the accessibility of all cockpit controls.	MoC4 HFs Reachability Analysis MoC5 HFs Reachability and Accessibility Campaign	HFs Reachability and Accessibility Assessment Report XXX123
CS 27.777(b)		ECL QAKs	Assess the accessibility to control the ECL QAKs.	MoC4 HFs Reachability Analysis MoC5 HFs Reachability and Accessibility Campaign	HFs Reachability and Accessibility Assessment Report XXX123
[…]	[…]
CS 27.1302(a)	All the controls and information necessary to accomplish these tasks must be provided;
CS 27.1302(b)(1)	(b) All the controls and information required by paragraph (a), which are intended for use by the crew members, must: (1) be presented in a clear and unambiguous form, at a resolution and with a precision appropriate to the task;

[Amdt 27/8]

Details

Source-Title: GM2 27.1302 Examples of compliance matrices View latest amendments

Erulesid: ERULES-1963177438-20206 Compare versions

Domain: Initial airworthiness

Amendedby: Amendment 8

Applicabilitydate: 17 June, 2021

Entryintoforcedate: 17 June, 2021

Regulatorysource: ED Decision 2021/010/R Navigate

Regulatorysubject: CS-27

Typeofcontent: GM to CS (Guidance material to certification specification)

Parentir: CS 27.1302 Installed systems and equipment for use by the crew members

Origin: EASA

Category: EAR