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The cockpit is enclosed by a one-piece, clamshell,
rea&nged canopy. Provisions are included to protect
the pilot and RIO Born lightning strikes by the installation
of aluminum tape on the canopy above the heads of
the crew. Normal opening and closing of the canopy is
by a pneumatic and hydraulic actuator with a separste
pneumatic actuator for locking and unlocking. The csnopy
can be opened to approximately 25” for ingress and
egress in approximately 8 to 10 seconds. In emergencies,
the canopy can be jettisoned t?om either crew position
or externally from either side of the forward
fuselage. For rescue procedures, see paragraph 12.1.6.
The maximum permitted taxi speed and
headwind component with the canopy open
is 60 knots.
Note
An occasional howl inside the canopy may
occur in some aircraft when subjected to an
approximate 4g maneuver. The howl has
been attriiuted to the canopy rain seals; when
they are removed the howl disappears. A
canopy howl in aircraft with rain seals installed
does not limit aircraft operation.
The canopy system is controlled with the canopy
control handle under the right forward canopy sill at
each crew position. An external canopy control handle
is on the leg side of the fuselage directly below the
boarding ladder. A CANOPY caution light on the RIO
CAUTION ADVISORY panel illuminates when the
canopy is not locked. A LADKNPY cautionlight on the
pilot CAUTION ADVISORY panel illuminates when
the canopy is not locked or the ladder is not stowed.
Electrical power for the caution lights is supplied from
the essential dc bus No. 2, through the CAN/LAD/
CAUTION/EJECT CMD IND circuit breaker (8C5). A
l-inch by 2-inch white stripe is painted on the canopy
hame and sill above the canopy control handle panel.
Alignment of this stripe provides an additional visual
guide that the canopy is in a closed-and-lockedp osition.
Pmmatic pressure for normal canopy operation is
storedi n ah&h-pressured, ry-nitrogenX W-VO~s ticing
is accomplished externally through the nose wheelwell.
Normal pressure should be serviced to 3,000 psi. A
pressureg augei n the nosew heelwell shouldb e checked
during preflight. A fully charged nitrogen bottle pmvides
approximately 10 complete cycles (open and
close) of the canopy before the system is reduced to a
minimum operating pressure of 225 psi. If pneumatic
pressured ropsb elow 225 psi, the canopyc onnol module
automatically prevents iiuther depletion of the main reservoirandthecanopymustbe.
openedbytheauxiharymoda.
2.37.1 Canopy Operation
2.37.1.1 External Canopy Controls. Access to
the external canopy control is obtained through au access
door on the left titselage directly below the boarding ladder.
Pullingthehandleoutandroratingitcounterclockwise
to NORM CL closest he canopy.R otatingh uther counterclockwise
to the BOOST close position will allow the
canopy to be closed under a high headwind or coldweatherc
onditions.I f BOOST is usedt o closet he canopy,
the handle should be returned to NORM CL. Rotating it
clockwise t.o NORM OPEN openst he canopyu ndern or- mal opemtmg conditions and rotating it further to AUX
OPEN allows the canopy to be opened manually.
Note
NORM OPEN is not detenti, therefore, do
not rotatet.h e handle further clockwise unless
the AUX OPEN position is desired. Using
AUX OPEN unnecessatily will deplete the
auxiliary uplock nitrogen bottle.
2.37.1.2. Cockpit Canopy Controls. The canopy
pneumatica ndh ydraulic systemi s operatedb y actuation
of either of the cockpit control handles (Figure 2-125),
or the external control handle, which positions valves
within the pneumatic control module to open or close
the canopy. The canopy pneumatic and pyrotechnic systems
are shown on FO-15. Modes of operation available
are: OPEN, AUX OPEN, HOLD, CLOSE, andBOOST.
Flightcrews shall ensure that hands and foreign
objects are clear of front cockpit handholds,
top and sides of ejection seat headboxes,
and canopy sills to prevent personal
injury and/or structural damage during canopy
opening or closing sequence. Foreign
objects can catch ejection system initiators
on the right aft side of the ejection seat headboxes
causing inadvertent ejection even with
seat locking handles safe. Only minimum
clearance is afforded when canopy is trausiting
fore or aft.
ORIGINAL 2-240
NAVAIR Ol-Fl4AAD-1
NOMENCLATURE FUNCTION
a
CANOPY caution light Advises RIO canopy is not in a down and locked position.
(RIO)
0 $gyy caution Advises pilot boarding ladder is not in the up and locked position or that
　
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