Section II
Limitations
BEECHCRAFT
Duchess 76
REQUIRED EQUIPMENT FOR VARIOUS CONDITIONS
OF
FLIGHT
Part
91
of
the
Federal Aviation Regulations specifies
minimum numbers and types
of
airplane instruments and
equipment which must be installed and operated for various
kinds
of
flight conditions. This includes VFR day, VFR night,
IFR day and IFR night.
Regulations
also
require that all airplanes
be
certified by the
manufacturer
for
operations under various flight conditions.
At certification, all required equipment must
be
in operating
condition and should be maintained to assure continued air-
worthiness. If deviations from the installed equipment were
not permitted, or if the operating rules did not provide for
various flight conditions, the airplane could not be flown
unless all equipment were operable. With appropriate limita-
tions, the operation of every system or component installed in
the airplane is not necessary when the remaining operative
instruments
and
equipment provide for continued safe opera-
tion. Operation in accordance with limitations established to
maintain airworthiness can permit continued
or
uninterrupted
operation of
the
airplane.
For the sake
of
brevity, the Required Equipment Listing does
not include obviously required items such
as
wings, rudder,·
flaps,
engines,
landing gear, etc. Also the list does not
include items which do not affect the airworthiness of the
airplane
such
as
entertainment
systems,
passenger
convenience items, etc. However, it is important to note that
ALL
ITEMS
WHICH
ARE
RELATED
TO
THE
AIRWORTHINESS
OF
THE
AIRPLANE
AND
NOT
I
NCLUDED
ON
THE
LIST
ARE
AUTOMATICALLY
REQUIRED
TO
BE OPERATIVE.
,/
2-10
September,
1983
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