LOS ANGELES (CBSLA.com) — Amazon may be one step closer to delivering packages by drone.

On Thursday, the FAA issued an experimental airworthiness certificate to the company’s unmanned aircraft design, which will be used for research, development and crew training.

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Under the certificate provisions, several rules must be followed, including operating flights at 400 feet or below in the daylight.

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The FAA said on its website that the certificate also requires pilots to obtain a private pilot’s certificate, as well as medical certification.

Amazon will also be required to give the FAA monthly data, such as the number of flights conducted.

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Amazon unveiled its future plan to deliver packages by drone in 2013.