GM2 MMEL.140 Level of safety

Q: What are the acceptable means to maintain the level of safety for an MMEL item?

An acceptable level of safety can be maintained through one or a combination of: (1) adjustment of operational limitations; (2) transfer of the function/information to an operating system/component performing the required function or providing the required information, provided the change in crew workload and/or crew training remains acceptable; (3) development of operational procedures (e.g. alternate procedures; additional pre-flight checks), provided the change in crew workload and/or crew training remains acceptable; (4) development of maintenance procedures (such as deactivating and securing the system/component of concern, additional verification tasks).

Q: Under what condition can the function/information of an inoperative MMEL item be transferred to another operating system/component?

The transfer is acceptable provided the change in crew workload and/or crew training remains acceptable.

Q: What types of operational procedures are listed as a means to maintain safety for an MMEL item?

Operational procedures such as alternate procedures and additional pre-flight checks, provided the change in crew workload and/or crew training remains acceptable.

Q: What are examples of maintenance procedures that can be used to maintain the level of safety for an MMEL item?

Maintenance procedures such as deactivating and securing the system/component of concern, and additional verification tasks.

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GM2 MMEL.140 Level of safety

ED Decision 2014/004/R

MEANS TO MAINTAIN THE LEVEL OF SAFETY

(a) An acceptable level of safety can be maintained for an MMEL item through one or a combination of the following means:

(1) adjustment of operational limitations;

(2) transfer of the function/information to an operating system/component performing the required function or providing the required information, provided the change in crew workload and/or crew training remains acceptable;

(3) development of operational procedures (e.g. such as alternate procedures; additional pre-flight checks), provided the change in crew workload and/or crew training remains acceptable;

(4) development of maintenance procedures (such as deactivating and securing the system/component of concern, additional verification tasks).

Details

Source-Title: GM2 MMEL.140 Level of safety View latest amendments

Erulesid: ERULES-1963177438-4140 Compare versions

Domain: Initial airworthiness

Amendedby: Initial issue

Applicabilitydate: 31 January, 2014

Entryintoforcedate: 31 January, 2014

Regulatorysource: ED Decision 2014/004/R Navigate

Regulatorysubject: CS-MMEL

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

Parentir: CS MMEL.140 Level of safety

Origin: EASA

Category: EAR