What are the lightning protection requirements for electrical systems critical for safe flight and landing in small category VCA?

These systems must be designed and installed so that their function at the aircraft level is not adversely affected during and after lightning exposure. They must also recover normal operation in a timely manner after the aircraft is exposed to lightning, unless recovery conflicts with other operational or functional requirements.

How should electrical and electronic systems be designed to handle lightning exposure in small category VCA aircraft?

They should be designed and installed to ensure that critical functions are not adversely affected during and after lightning exposure, and that normal operation is recovered in a timely manner. Systems affecting aircraft capability or crew response to adverse conditions must also recover normal operation after lightning exposure.

VTOL.2515 Electrical and electronic system lightning protection

Q: What electrical and electronic systems require lightning protection in small category VCA aircraft?

Electrical or electronic systems that perform a function, the failure of which would prevent continued safe flight and landing for Category Enhanced, or a controlled emergency landing for Category Basic, must be designed and installed such that the function at the aircraft level is not adversely affected during and after lightning exposure, and the system recovers normal operation in a timely manner. Additionally, systems that reduce aircraft capability or the flight crew's ability to respond to adverse conditions must recover normal operation after lightning exposure.

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Unless it is shown that exposure to lightning is unlikely:

(a) each electrical or electronic system that performs a function, the failure of which would prevent continued safe flight and landing for Category Enhanced, or a controlled emergency landing for Category Basic, must be designed and installed such that:

(1) the function at the aircraft level is not adversely affected during and after the time the aircraft is exposed to lightning; and

(2) the system recovers normal operation of that function in a timely manner after the aircraft is exposed to lightning unless the system’s recovery conflicts with other operational or functional requirements of the system.

(b) each electrical and electronic system that performs a function, the failure of which would reduce the capability of the aircraft or the ability of the flight crew to respond to an adverse operating condition, must be designed and installed such that the system recovers normal operation of that function in a timely manner after the aircraft is exposed to lightning.

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Source-Title: VTOL.2515 Electrical and electronic system lightning protection View latest amendments

Erulesid: ERULES-1963177438-22540 Compare versions

Domain: Initial airworthiness

Amendedby: n/a

Applicabilitydate: n/a

Entryintoforcedate: n/a

Regulatorysource: n/a Navigate

Regulatorysubject: SC-VTOL

Typeofcontent: SC (Special Condition)

Origin: EASA

Category: EAR

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