This Flight Handbook contains information, limitations, and procedures to be followed for safe and efficient operation of the Orpex T-71 vessel.  Good judgment is expected in instances where the recommended procedure does not cover the situation.




This Handbook is the property of Argus Foundation and is not to be made available to persons or agencies not affiliated with Argus Foundation unless authorized.  Refer to the Management Policy and Procedure Manual for information regarding control of this publication.




Copies of this Handbook will be assigned during initial training.  Assignment of additional or replacement copies and policy regarding crewmember responsibilities relative to availability in flight are outlined in the Flight Operations Policy Manual.


Chapter 23 (International Supplement) of this Flight Handbook is assigned only to staff personnel and to crewmembers operating outside of the United States of America.  All references to availability in flight and to revision responsibilities apply equally to this chapter when the holder is assigned to International operations.




Revisions are numbered and issued in consecutive order.  Each revision includes a Transmittal page.  The page includes a resume of major changes to aid in determining the extent or significance of the revised material.  Transmittal pages are also used to control the deletion of electronic messages and operational bulletins made obsolete by inclusion of their subject material in to the main body of this Handbook.


Yellow pages are used to describe system modifications or procedural changes planned for, but not yet applicable to, a particular vessel.  When the change becomes standard, the appropriate white page is revised and the yellow page deleted.


The person to whom this Handbook is assigned is responsible for keeping it current.  Revised pages are to be inserted as soon as possible after they are received.  A transmittal record page is provided and must be maintained.  A separate series of revision transmittals is issued for holders of chapter 23 (International Supplement) and holders must maintain the transmittal record page supplied.








Indicates beginning of more than one line of revised or new material


     Indicates end of more than one line of revised or new material.




Indicates only one line, or portion thereof, of      revised or new material.


Indicates deletion of material.


Indicates end of section.





Each page number is composed of three segments as described below:




System Descriptions







Each chapter index shows all section, major paragraph, and sub-paragraph titles in the order they appear.  New index pages are provided in revision transmittals when revised pages require subject titles to be rearranged.  If pages are missing from printed versions of this material and to check for updates to this manual, use the USDC web address at


Current Flight Operations Training Bulletins should be filed behind the index tab.  A bulletin index is provided and is revised as bulletins are issued or deleted.




This Handbook is designed to meet the needs of the operating crew relative to preflight, in-flight, and post-flight operations.  Format and content is arranged so that each crewmember can locate specific procedural coverage or necessary system information.


Material that is basic theory or has an initial training nature is separated so that the operational portions of the vessel systems can be more easily referenced.




FORMAT (Continued)




Chapters 1, 2, 3, and 4 contain the operating limitations, normal, emergency, and abnormal procedures.  These chapters cover pertinent USDC Approved Flight Manual Limitations, general and specific normal operating procedures, normal, emergency, and abnormal checklists together with their amplifications, and a listing of system specifications in quick reference form.


Chapter 5 contains additional normal operating procedures for use when operating a system where the usual complement of components is not available.  These procedures are designed for specific inflight malfunctions or to provide alternate operating instructions when dispatched with a unit inoperative.  The vessel is able to safely continue operation and may or may not have to observe a performance restriction.  This chapter also includes instrument correction data when required to operate in an alternate mode.  Section numbers in this chapter correspond with the chapter number to which the system handled by the procedure is assigned.  For example, an additional procedure relative to landing struts, which is described in chapter 19, would be found in the 05.19 section.


Chapter 6 contains all required normal en route operational performance charts together with instructions and explanations for the entire flight planning and performance system used on the vessel.  It also contains the Minimum Equipment and Configuration Deviation Lists.


Chapters 7 through 22 cover operational information about the vessel systems.  Each chapter is arranged identically to aid in quickly locating needed data.  The type of information found in each section is outlined below:


Section 01 – System Description


Provides a complete operationally oriented description of each system or subsystem covered in the chapter.  Depth of coverage is equivalent to that provided in transition training, which eliminates the need for a supplemental training information document.


Section 02 – Controls and Indicators


Provides illustrations of each type of control and indicator related to systems covered in the chapter.  Includes brief description of normal functions of control.  Shows specific nomenclature and location of the controlling electrical circuit protection.


Section 03 – Schematics


Contains simplified schematics, oriented towards associating the system controls and indications to primary system flow, which support the system description section.



FORMAT (Continued)




The same basic style, showing primary system flow from left to right or top to bottom, is employed for all schematics.  Unless mentioned in specific procedures, electrical power sources are not normally labeled.  A Code/Condition block states the condition shown in the schematic; most schematics are designed to show the system in its normal configuration with electrical power supplied and switches or controls in their usual positions.




Additional sections may be used to show information that does not fit the above categories.  Titles of these sections are descriptive of their contents.


Chapter 23 is considered part of the flight handbook, although issued and controlled by a separate revision system.  It contains flight planning, navigation, and performance information to supplement that found in chapter 6 and is required only for International operations.




The widest solid line shows the primary flow of a schematic.  If more than one primary system is shown, such as a left and right system, colored lines or coded patters of the same width are used.


Where the primary system is being controlled mechanically, pneumatically, or hydraulically, a line half the width of the primary line represents the control function.


The line representing the flow or connection from a system to an indicator is a single width line.


Standard line symbology is used to differentiate between electrical, mechanical, and fluid lines.  Standard symbols for system unites are used when possible.  The symbol also indicates the method used to actuate, such as M for motor, S for solenoid, or a handle for manual.


(See the following page for some typical symbols)

















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