I 
119TH CONGRESS 
1ST SESSION H. R. 4994 
To require the Administrator of the Federal Aviation Administration shall 
update the regulations to issue regulations to phase out the use of 
bleed air systems in certain aircraft, and for other purposes. 
IN THE HOUSE OF REPRESENTATIVES 
AUGUST 19, 2025 
Mr. FROST (for himself, Mr. LAWLER, and Mr. GARAMENDI) introduced the 
following bill; which was referred to the Committee on Transportation 
and Infrastructure 
A BILL 
To require the Administrator of the Federal Aviation Admin-
istration shall update the regulations to issue regulations 
to phase out the use of bleed air systems in certain 
aircraft, and for other purposes. 
Be it enacted by the Senate and House of Representa-
tives of the United States of America in Congress assembled, 
SECTION 1. SHORT TITLE. 
This Act may be cited as the ‘‘Safe Air on Airplanes 
Act’’. 
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SEC. 2. REGULATIONS ON BLEED AIR SYSTEMS IN CERTAIN 
AIRCRAFT. 
(a) REGULATIONS REQUIRED.—Not later than 6 
months after the date of enactment of this Act, the Ad-
ministrator of the Federal Aviation Administration shall 
update the regulations under part 25 of title 14, Code of 
Federal Regulations, and any other applicable regulations, 
to— 
(1) prohibit new type certified turbine and 
turbo-prop aircraft designs from using bleed air sys-
tems; 
(2) require that, beginning on the date that is 
7 years after the date of enactment of this Act, any 
bleed air system in a newly manufactured aircraft is 
fitted with a filter or combination of filter and air 
cleaning device designed and demonstrated to re-
move gaseous and particulate components of oil 
fumes; and 
(3) provide for a phase-out of the use of bleed 
air systems in the manufacture of existing type de-
signs of turbine and turbo-prop driven aircraft ac-
cording to the following: 
(A) Not later than 10 years after the date 
of enactment of this Act, 25 percent of such 
aircraft shall be manufactured without bleed air 
systems. 
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(B) Not later than 20 years after the date 
of enactment of this Act, 50 percent of such 
aircraft shall be manufactured without bleed air 
systems. 
(C) Not later than 30 years after the date 
of enactment of this Act, 100 percent of such 
aircraft shall be manufactured without bleed air 
systems. 
(b) DEFINITION OF BLEED AIR SYSTEM.—In this 
Act, the term ‘‘bleed air system’’ means an air system 
that— 
(1) uses compressed air that is taken from an 
aircraft engine, or auxiliary power unite compressor 
stage, that is upstream of the combustion chamber 
or on a shaft driven by a turbine engine; and 
(2) provides pressurized air to the aircraft 
pneumatic system that passengers or crew could 
foreseeably inhale or come in contact with during 
the operation of the aircraft for applications includ-
ing ventilation. 
Æ 
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