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AMM (weighing and leveling

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6/25/22, 9:48 AM
BHT - Technical Publications
LEVELING AND WEIGHING
Introduction
(DMC-505-A-08-00-00-00A-018A-A, Issue 001 - 2017/05/18, ECCN EAR99)
1.
General
THE CENTER OF GRAVITY (CG) MUST ALWAYS BE WITHIN THE OPERATIONAL LIMITS, OR
MANEUVERABILITY OF THE HELICOPTER CAN BE DECREASED. UNSAFE FLIGHT CONDITIONS
THAT CAN CAUSE DEATH OR SERIOUS INJURIES CAN OCCUR.
It is the pilot’s responsibility to make sure that each flight is accomplished within the limits of the Gross Weight
CG Envelope given in the Flight Manual. If the helicopter CG is not within the certified limits (i.e., the Gross Weight
CG Envelope), the helicopter will assume an unfavorable attitude. This reduces the cyclic control range and
introduces high loads into the rotor system, which causes excessive wear of components. Because this condition
can be dangerous and is undesirable, it is important to keep the helicopter’s operational CG within the Gross
Weight CG Envelope.
The leveling and weighing gives the data and procedures necessary to make sure that the helicopter is operated
safely. It can be necessary to do these procedures after a configuration change and it can be required by the
local aviation authorities.
It consists of the subjects that follow:
Leveling
Weighing
CG calculations
Ballast adjustment
2.
2.1
Description
Leveling
The leveling gives the data and procedure to level the helicopter.
2.2
Weighing
The weighing gives the data and procedure to weigh the helicopter.
2.3
CG calculations
The CG calculations give the data and procedures to calculate the Empty Weight and the CG of the helicopter. It
consists of the subjects that follow:
Longitudinal CG
Lateral CG
Empty Weight
Actual weight record examples
2.4
Ballast
The ballast provides the data and procedures to calculate and install or remove the ballast necessary to adjust
the CG of the helicopter. It consists of the subjects that follow:
Necessary ballast
Installation and removal of ballast plates
End of data module
https://www.bellhelicopter.net/tp/ietm/505/PMC-505-97499-02000-00/DMC-505-A-08-00-00-00A-018A-A(ietm-print-outlet:printing/505-maintenance-ma… 1/1
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