USE OF PROCEDURAL WORDS
The concept of procedural word usage and intended meaning which has been
adhered to in preparing this RFM is as follows:
″Shall″ or ″Must″ have been used only when application of a procedure is
mandatory.
″Should″ has been used only when application of a procedure is recom-
mmended.
″May″ has been used only when application of a procedure is optional.
″Will″ has been used only to indicate futurity, never to indicate a mandatory
procedure.
″Condition″ has been used to determine if the item under examination
presents external damage which could jeopardize its safe operation.
″Secured″ has been used to determine if the item under examination is
correctly locked; mainly referred to doors and disconnectable items.
″Security″ has been used to determine if the item under examination is
correctly positioned and installed.
ABBREVIATION
The use of capitol letters in the text, apart from normal grammatical usage
indicates the actual wording of marking of indicators, controls or control
positions on the helicopter.
Abbreviations and acronyms used throughtout this RFM are defined as
follows:
– a.c. : Alternating current
– AEO : All Engines Operative
– A.F.C.S. : Automatic Flight Control Sys-
tem
– A/F : Airframe
– AGL : Above Ground Level
– ALS : Ambient Light Sensor
– AWG : Aural Warning Generator
RFM A109E
iv
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