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PURCHASE AGREEMENT, FULL ASSUMPTION OF LIABILITY AND
INDEMNITY AGREEMENT
Buyer purchases from Hammer Engines GmbH, a Limited Liability Company or from one of
Hammer Engines GmbH authorized dealers, a MINIATURE TURBOJET ENGINE for model
aircraft, cars or boats ("Model Engine") for the invoice price, accompanying this sale, and
Buyer and Vogelsang Aeroscale agree to all of the following terms and conditions:
1. Buyer's Representations. Buyer represents that he/she is very experienced in model
airplane operation, and that all of the information set forth in the Purchase Application is true
and correct. Hammer Engines GmbH relies on such representations, and would not enter into
this sale but for these representations.
2. Buyer's Acknowledgment of Risks and Dangers. Buyer recognizes that operation of the
Model Engine may be dangerous, and that under certain circumstances, its handling will be
dangerous. As set forth in Paragraph 3 below, Buyer accepts full responsibility for all of these
risks and waives all liability as against Hammer Engines GmbH.
(a) Buyer's Acknowledgment of Danger. Buyer expressly acknowledges that use of the
Model Engine is dangerous if improperly handled, and could inflict injury if attempts are
made to handle it properly, if the user does not fully acquaint himself/herself with the Model
Engine's operation procedures. The Model Engine may cause burns to the user, or the user's
assistant, particularly in the start-up procedure, and Buyer agrees to use extreme caution. The
Model Engine exhaust is extremely hot, and will burn someone or something placed directly
behind the exhaust tube. Highly flammable liquid is used to operate the Model Engine and it
or its fumes will ignite easily and flare up rapidly. The Model Engine itself remains extremely
hot, after it is shut off, and requires a cooling down period. Improper use of the Model Engine
or failure to follow Academy of Model Aeronautics ("AMA") guidelines and rules will result
in injury to the user, the user's assistant, or bystanders. Operation of the Model Engine in any
location other than an approved location, and under safe circumstances could lead to injury to
bystanders. A risk exists from explosion, in the event of tampering, modifications leading to
over-speed or extreme metal fatigue.
(b) Buyer's Obligation to Become Fully Acquainted With Operation Procedure. Buyer
acknowledges receipt of operating instructions for the Model Engine which depicts its
handling and operation. Buyer agrees to thoroughly acquaint himself/herself with these
materials, and to require his/her assistant to become equally familiar with them. Buyer
expressly agrees not to allow any person to assist in the start-up procedure of the Model
Engine, who has not become thoroughly familiar with these materials.
(c) Agreement to Use Qualified Assistant in Start-Up Procedure. Buyer acknowledges that
the start-up procedure for the Model Engine cannot be safely done, without an assistant.
Buyer expressly agrees to use an assistant, who is thoroughly familiar with the Model Engine
and its operation as set forth above, on each occasion when the Model Engine is started up.
(d) Warning to Bystanders. Buyer acknowledges that injury or burns to bystanders could
occur, during the start-up procedure or when operating the Model Engine. Buyer expressly
agrees to take all steps necessary to assure that no bystander will be in a position to receive
injuries during the start-up procedure, or while the Model Engine is running.
Hammer Engines GmbH / IQ-Series / Manual
