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Congressional Research Service
Informing the Iegislative debate sinco 1914


December  18, 2023


National Park System: Air Tour Management Issues


The statutory and regulatory framework for conducting air
tours over units of the National Park System has been of
ongoing interest to Congress. The National Parks Air Tour
Management  Act of 2000 (Air Tour Act; P.L. 106-181; 49
U.S.C. §40128) governs commercial air tours over most
National Park System units as well as tribal lands within or
abutting park units. The act requires the Federal Aviation
Administration (FAA) and the National Park Service (NPS)
to create air tour management plans (ATMPs) for sites at
which operators apply to conduct commercial air tours,
with some exceptions. Congress has conducted oversight
and considered additional legislation on national park
overflights and ATMPs. Some stakeholders seek to limit or
prohibit commercial air tours over national park units
owing to concerns about noise, resource protection, and
safety; others advocate for additional opportunities and
greater flexibility for air tour operators to support their
livelihoods and contribute to local economies.

Legisiatve Background
Air tours over national park units have been regulated by a
series of statutes. The National Parks Overflights Act of
1987 (P.L. 100-91) contained provisions for air tour
management  at several park units and required a broader
NPS  study of the effects of all park overflights. The study
informed the 2000 Air Tour Act, which governs air tours
over units of the National Park System outside Alaska,
except Grand Canyon National Park. (Other laws and
regulations address air tours at Grand Canyon National
Park; see, for example, P.L. 112-141, §35001(a)(1).)

The Air Tour Act generally directs FAA and NPS to create
ATMPs   covering National Park System units, as well as
tribal lands within or abutting park units, where operators
seek to conduct air tours. Each plan could prohibit or limit
air tours, such as by route and altitude restrictions. The
purpose of a plan is to mitigate or prevent any harm
commercial air tours may cause to natural and cultural
resources, visitor experiences, and tribal lands.
Development  of an ATMP requires environmental review
under the National Environmental Policy Act (NEPA; 42
U.S.C. §§4321-4370f). The Air Tour Act also established
the National Parks Overflights Advisory Group
(NPOAG)-including   federal officials, aviation industry
representatives, air tour operators, environmental groups,
and tribes-to advise the agencies on park air tours.

Under the law and its implementing regulations, FAA
received applications to conduct commercial air tours at
more than 100 park units or adjacent tribal lands. FAA and
NPS  began developing ATMPs  for about a dozen sites, but
development proceeded more slowly than expected, and
through 2021, no ATMPs  were completed. Despite the


delays, many existing air tour operations continued to run
under interim operating authorities provided by the act.

In 2012, Congress amended the Air Tour Act (P.L. 112-95,
§501) to allow NPS and FAA, in lieu of an ATMP, to enter
into voluntary agreements with individual air tour
operators. Similar to ATMPs, voluntary agreements may
address the conduct of air tours (e.g., routes, altitudes,
timing restrictions) and provide incentives for quiet aircraft
technology, among other conditions. After an opportunity
for public review and consultation with any tribes whose
lands may be flown over, a voluntary agreement may be
implemented without further administrative or
environmental process (P.L. 112-95, §501(c)). In 2015,
2016, and 2018, the agencies finalized voluntary
agreements with some operators at Big Cypress National
Preserve, Biscayne National Park, and Glen Canyon
National Recreation Area.

P.L. 112-95 also exempted park units with 50 or fewer
annual air tour flights from the requirement to establish an
ATMP   or voluntary agreement. As of February 2023, the
FAA  reported that 54 park units with air tours are exempted
from requirements to establish an ATMP or voluntary
agreement because they have 50 or fewer annual flights.
The number of exempted parks may change from year to
year based on changes by operators in the number of air
tours flown. The NPS Director also can withdraw an
exemption in order to protect park resources and values or
visitor use and enjoyment.

Recent Developments
A 2020 court order (In re Public Employees for
Environmental Responsibility, 957 F.3d 267 (D.C. Cir.
2020)) required FAA and NPS to bring 23 eligible parks
into compliance with the Air Tour Act within specified time
frames. Under the court order, the agencies completed 12
ATMPs   and several voluntary agreements with operators in
2022 and 2023, as shown in Table 1, below. The agencies
have released draft ATMPs for several additional units-
Haleakala National Park, Hawai'i Volcanoes National Park,
Bandelier National Monument, and Canyon de Chelly
National Monument-and   are negotiating voluntary
agreements at Lake Mead National Recreation Area.

Issues   and  Legislation
The recent ATMPs  and voluntary agreements vary in their
continuity with air tour activities under the interim
operating authorities. At some units, the number of flights
allowed under the new plans matches the annual average of
flights in 2017-2019 under the interim authorities. This is
the case for Bryce Canyon National Park (515 tours
authorized annually in the ATMP based on 2017-2019
averages), Arches National Park (309 tours), and Great

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