unlocked. On aircraft modified by AFC 581, the canopy
structure also contains a flat rain seal to prevent water
intrusion into the cockpit when the aircraft is in static
CANOPY INFLATABLE
conditions.
SEAL RETAINER
COMPONENTS
Components of the canopy inflatable seal system
are the canopy inflatable seal and the canopy seal
pressure regulator.
Canopy Inflatable Seal
The canopy inflatable seal (fig. 3-3) is retained in a
channel around the circumference of the canopy
assembly frame. When inflated, the seal fills the gap
between the frame and aircraft structure.
Canopy Seal Pressure Regulator
CANOPY
INFLATABLE
The canopy seal pressure regulator (fig. 3-4) is on
SEAL
INFLATABLE
the turtle deck. It consists mainly of a check valve,
SIDE
shutoff valve, bellows, spring-loaded ball, and plunger.
TYPICAL CANOPY INFLATABLE SEAL REMOVED
The regulator regulates its 80-psi bleed air input to the
25 5 psi required by the canopy seal system, and
AMEf0303
controls inflation and deflation of the canopy inflatable
seal. The regulator also receives pressures in excess of 6
to 8 psi above regulated value.
Figure 3-3.--Canopy inflatable seal (removed).
CANOPY SEAL
OUTBD
PRESSURE REGULATOR
F
W
D
VIEW LOOKING DOWN THROUGH ACCESS 20131-2
AMEf0304
Figure 3-4.--Canopy seal pressure regulator location.
3-7
