 |
|||
|
Page Title:
Deviations from clearances requirements |
|
||
| ||||||||||
|
|  IL-D-19326H
3.11 Clearance requirements. Oxygen lines, fittings and equipment shall be
installed above and at least six inches away from fuel, oil and hydraulic systems
to avoid contamination. Deflector plates shall be used, where necessary, to keep
hydraulic fluids away from oxygen lines, fittings and equipment. Open ends of
cleaned and dried tubing shall be plugged with impermeable caps at all times,
except during attachment or detachment of parts. There shall be at least 2 inches
(50.8 mm) of clearance between the oxygen system and flexible moving parts of the
aircraft. There shall be at least 1/2 inch (12.7 mm) clearance between the oxygen
system and rigid parts of the aircraft, except at clamp areas. The oxygen system
tubing, fittings and equipment shall be separated at least 6 inches {152.3 mm)
from all electrical wiring, heat conduits and heat emitting equipment in the
aircraft. Insulation shall be provided on the hot ducts, conduits or equipment to
prevent heating of the oxygen system. To assure adequate glove clearance around
valves and disconnects, the following clearances shall be provided. The minimum
clearance shall be a 3 inch (76.2 mm) diameter circle around the vent and supply
disconnects and a 5 inch (127 mm) diameter circle around the filler valve for
permanent installations. The centers of the circular clearance areas coincide
with the longitudinal axes of the valves.
3.11.1 Deviations from clearances requirements. When barriers such as ribs,
webs, frames, channels, extrusions and strangers exist between oxygen lines and
electrical wires in such a manner that there is no danger of such lines contacting
each other, the above requirements for separation, mounting and covering shall not
be applicable. Shields shall be acceptable to the acquiring activity. Where
electrical wires lead into oxygen equipment due to an electrical item being a
component of the oxygen equipment, the requirements for separation, mounting and
covering are not applicable, except that they shall be secured against chaffing.
Deviations other than specified herein must be approved by the acquiring activity.
3.12 Aircraft marking requirements: The aircraft shall be permanently and
legibly marked in the locatlons and with the information specified below, using a
minimum letter height of 1/4 inch (6.35 mm). Color of the-lettrs are to be black
on a white background.
a.
Adjacent to the overboard vent opening:
CAUTION
LIQUID OXYGEN VENT
b.
On outside surface of filler box cover plate:
LIQUID OXYGEN (BREATHING) ACCESS
c.
On underside surface of filler box cover plate
CAUTION
KEEP CLEAN, DRY AND FREE FROM OILS
d.
Adjacent to liquid oxygen drain valve location:
DO NOT OPEN DRAIN VALVE UNTIL DRAIN HOSE AND
DRAIN TANK ARE CONNECTED
e.
Adjacent to recharger location:
20
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals