1 September 2011
27. GENERAL WARNINGS AND
shall understand and apply during many phases of
operation and maintenance.
KEEP AWAY FROM LIVE CIRCUITS.
Operating personnel shall observe all safety
regulations at all times. Do not replace components
inside the equipment when potentially lethal voltages
Do not perform hot work without specific
are present. Turn off system power before
authorization of activity Aviation Gas Free
making/breaking electrical connections. Regard any
Engineer (AVGFE) or Gas Free Engineer
exposed connector, terminal board, or circuit boards
as a possible shock hazard. Components that retain a
charge shall be discharged only when such grounding
The HT-900B, HT-920B, HT-71002 and
does not result in equipment damage. If a test
MCH-100-A heat guns are the only
connection to energized equipment is required, make
authorized heat guns to be used when
the test equipment ground connection before probing
working on aircraft that have not been
the voltage or signal to be tested. Adhere to all lock
defueled and purged. The aircraft must be
out/tag out requirements.
defueled and purged before using any other
heat guns listed in this manual. Aircraft with
DO NOT SERVICE OR ADJUST ALONE.
open fuel cells or broken or open fuel lines
Personnel shall not under any circumstance reach into
shall be certified gas free in accordance with
or enter any enclosure for the purpose of servicing, or
NAVAIR 01-1A-35, or AF T.O. 1-1-3.
adjusting the equipment alone, without immediate
presence, or assistance of another person capable of
Aircraft w it h open fuel cells or broken or
open fuel lines shall be cert ified gas free
in accordance with NAVAIR 01-1A-35
or near high voltages or hazardous materials shall be
aut horized for use on aircraft w hen
information may be obtained by consulting with: the
w orking environment exceeds Class 4
Office of Bioenvironmental Health (Air Force), Navy
LEL. I .e., open fuel cell, open fuel line,
Safety Center, Activity HAZMAT Officer (Navy), or
fuel vent ing, lox vent ing, ( NAVAI R
the local Red Cross organization.
DO NOT WEAR JEWELRY. Remove rings,
When using heat guns with electric motors,
watches, and other metallic objects which may cause
re-certification may be required as work
electric shock, or burn hazard.
progresses, as directed by the Aviation Gas
Free Engineering Technician (AVGFET).
The MCH-100-A heat gun has been Electro-
flight line or flight deck use. All other
electric motor type heat guns are not
authorized for flight line or flight deck use
hangar deck/flight line environment,
provided the aircraft meets the gas-free
environment criteria (NAVAIR 01-1A-35,
or AF T.O. 1-1-3), and there are no EMI