How is the maximum take-off mass (MTOM) defined for a privately built unmanned aircraft?

For privately built UAS, the MTOM is the maximum mass defined by the builder, which ensures the controllability and mechanical resistance of the UA when flying within the operational limits.

What is the purpose of the maximum take-off mass (MTOM) as defined in GM1 Article 2(22)?

The MTOM is the maximum mass defined by the manufacturer or builder that ensures the controllability and mechanical resistance of the UA when flying within the operational limits.

Which elements must be included when determining the maximum take-off mass (MTOM) of a UA?

The MTOM must include all structural elements of the UA, the motors, the propellers if installed, all electronic equipment and antennas, the batteries and the maximum capacity of fuel, oil and all fluids, and the heaviest payload allowed by the manufacturer, including sensors and their ancillary equipment.

Does the MTOM include the weight of the propellers if they are not installed at the time of weighing?

The MTOM includes the propellers only if they are installed. The text states 'the propellers, if installed' as part of the elements to be included.

Are fluids such as fuel and oil included in the MTOM?

Yes, the MTOM includes the maximum capacity of fuel, oil and all fluids.

Who is responsible for defining the MTOM for a privately built UAS?

For privately built UAS, the MTOM is defined by the builder.

Are antennas and electronic equipment part of the MTOM?

Yes, all electronic equipment and antennas are included in the MTOM.

Does the MTOM include the weight of the batteries?

Yes, the batteries are explicitly listed as an element to be included in the MTOM.

GM1 Article 2(22) Definitions

Q: What is meant by 'heaviest payload' in the context of MTOM calculation?

The heaviest payload is the maximum payload allowed by the manufacturer, including sensors and their ancillary equipment, and it must be included in the MTOM.

Q: What does the MTOM ensure about the UA's performance?

The MTOM ensures the controllability and mechanical resistance of the UA when flying within the operational limits.

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GM1 Article 2(22) Definitions

ED Decision 2019/021/R

DEFINITION OF ‘MAXIMUM TAKE-OFF MASS (MTOM)’

This MTOM is the maximum mass defined by the manufacturer or the builder, in the case of privately built UAS, which ensures the controllability and mechanical resistance of the UA when flying within the operational limits.

The MTOM should include all the elements on board the UA:

(a) all the structural elements of the UA;

(b) the motors;

(d) all the electronic equipment and antennas;

(e) the batteries and the maximum capacity of fuel, oil and all fluids; and

(f) the heaviest payload allowed by the manufacturer, including sensors and their ancillary equipment.

Details

Source-Title: GM1 Article 2(22) Definitions View latest amendments

Erulesid: ERULES-1963177438-15549 Compare versions

Domain: Unmanned Aircraft System

Applicabilitydate: 1 July, 2020

Entryintoforcedate: 11 October, 2019

Regulatorysource: ED Decision 2019/021/R Navigate

Regulatorysubject: Cover regulation

Typeofcontent: GM to IR (Guidance material to implementing rule)

Parentir: Article 2 - Definitions

Origin: EASA

Category: EAR