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2-10
TO 00-105E-9
2-41. SAFETYING THE EJECTION SEAT.
2-42. The method of safetying the ejection seat varies
with the manufacturer’s different models and modification
to the seat. The firing mechanism which causes
the seat to eject is mechanically or gas activated. All
seats have ground safety features which will render
the seat safe for removal of personnel. See Figure 2-
14. Safetying of ejection seats is a simple task for
those familiar with the safetying features. Of prime
concern to the fire protection personnel is:
SAFETYING CATAPULT FIRING MECHANISM
SAFETYING OF EJECTION HANDGRIPS
Safetying of the seat or seats may be accomplished
by:
a. Insertion of safety pins in the catapult firing mechanism
and the drogue gun.
b. Insertion of safety pins in the ejection seat firing
handles, triggers, or face curtain.
c. By rotating the seat ejection ground control safety
lever up and forward, if incorporated OR by rotating a
“red flag” up to safe the lower ejection control “D” ring.
d. Mechanically actuated firing mechanisms may be
disarmed by (1) insertion of safety pins in the catapult
firing initiator, (2) disconnecting the gas line between
the firing initiator and a catapult by means of the quick
disconnects or (3) cut the initiator hose between the
firing mechanism and the catapult.
2-43. If time does not permit normal safetying of the
seat, cut the initiator hose. Figures 2-15 and 2-16
showmethods by which some ejection seat catapult firing
mechanism are safetied.
2-44. FORCIBLE ENTRY.
2-45. TRANSPARENT PLASTIC COVERED AREAS.
2-46. In gaining entry into the canopy by forcible means,
the desire is to obtain the largest opening in the shortest
period of time. Using a power rescue saw, this is
accomplished by cutting the plastic along the edges of
the frame. In cutting, commence operations at the front
of the frame. After three sides have been cut, carefully
cut the fourth side and prevent the glass from falling on
the crewmember during removal. Older aircraft canopies
can be cut on three sides, lifted, and broken off.
See Figures 2-16, 2-17, and 2-18.
WARNING
Extreme caution must be exercised when
cutting the top rear of the canopy, to avoid
hitting crewmember(s) and firing the ejection
seat firing mechanisms in this area.
NOTE
For new generation transparencies use a
thick Carbide tipped blade in the power
rescue saw.
2-47. FORCIBLE ENTRY INTO FUSELAGE AREAS.
2-48. Gaining entry into aircraft through the fuselage
presents the most difficult problem in making forcible
entry. The increase in performance of aircraft has
placed a demand on increasing the thickness and
strength of the aircraft skin. Fire protection personnel,
when cutting through the fuselage, must have a knowledge
of the aircraft interior. He/she must know the
locations of bulkheads, equipment inside the aircraft
that would prevent entry, location of fuel tanks, fuel,
flammable liquids, oxygen lines and cylinders, and
where forcible entry presents the least obstacles to cut
and gain entry. On large aircraft, an outline of cutting
areas is stenciled on the aircraft exterior, as an aid to
fire protection in making forcible entry. These marked
areas offer the least obstacle in gaining entry. Markings
are red dashed lines in a rectangular or square
shape.
2-49. Fire Protection personnel must not be dependent
upon these markings, as they may be obliterated during
an incident. However, during aircraft familiarization,
fire protection personnel must study these areas and
become familiar with their location on all types of aircraft.
When making forcible entry, the desire is to gain
the largest opening as quickly as possible. The power
rescue saw, equipped with metal cutting blades, is the
most satisfactory tool for forcible entry. If the aircraft is
relatively thin skinned, three cuts may bemade and then
the area cut may be bent down and outward from the
aircraft. If the aircraft fuselage is of thicker material,
four sides must be cut. When cutting through an aircraft,
particularly when utilizing the power rescue saw,
a danger exists of ignition of fuel, or any other flammable
liquid, that may be present by sparks produced
by the cutting operations. Adequate fire prevention measures
must be taken and standby protection should always
be at hand.
2-11
TO 00-105E-9
Figure 2-12. Examples of Ejection Seat Firing Mechansim
　
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