I 
118TH CONGRESS 
1ST SESSION H. R. 2561 
To require the Secretary of Transportation to enter into an agreement with 
the National Academies of Sciences, Engineering, and Medicine to 
produce a report that identifies and recommends a system of measuring 
aviation noise, and for other purposes. 
IN THE HOUSE OF REPRESENTATIVES 
APRIL 10, 2023 
Mr. LYNCH introduced the following bill; which was referred to the Committee 
on Transportation and Infrastructure 
A BILL 
To require the Secretary of Transportation to enter into 
an agreement with the National Academies of Sciences, 
Engineering, and Medicine to produce a report that iden-
tifies and recommends a system of measuring aviation 
noise, 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 ‘‘Peer-Reviewed Report 
on Measuring Metrics and Thresholds’’. 
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SEC. 2. REPORT ON SYSTEM FOR MEASURING AVIATION 
NOISE. 
(a) IN GENERAL.—Not later than 90 days after the 
date of enactment of this Act, the Secretary of Transpor-
tation shall seek to enter into an agreement with the Na-
tional Academies of Sciences, Engineering, and Medicine 
in which the National Academies shall produce a report 
that identifies and recommends a system of measuring 
aviation noise that— 
(1) with a highly reliable relationship, cat-
egorizes noise levels to determine compatibility for 
residential areas and high annoyance areas based on 
appropriate metrics; and 
(2) meets the requirements of section 47502(1) 
of title 49, United States Code. 
(b) REQUIREMENTS.—In producing the report re-
quired under subsection (a), the National Academies 
shall— 
(1) consult— 
(A) multidisciplinary experts from public 
health and medical professions; 
(B) sleep experts; 
(C) noise experts; and 
(D) acoustical engineers; and 
(2) consider— 
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(A) 
the 
Neighborhood 
Environmental 
Study conducted by the Federal Aviation Ad-
ministration; 
(B) multiple metrics for measuring avia-
tion noise, including— 
(i) N-Above; 
(ii) T-Above; 
(iii) Time-Above-Ambient; 
(iv) C-weighted dB; and 
(v) day-night average sound level be-
tween 40 and 75 dB; 
(C) the difference between local noise envi-
ronments, including ambient noise, and air-
craft-induced noise; 
(D) nighttime noise; and 
(E) the effects of frequent and persistent 
noise events and the effects on next generation 
air transportation system technology; and 
(3) address whether the metrics used to deter-
mine whether a change in noise levels in a next gen-
eration air transportation system has a significant 
or reportable impact on such system are appropriate 
metrics to be used in the system of measuring avia-
tion noise described in subsection (a). 
Æ 
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