ModernWest Longmont, LLC v. Federal Aviation Administration

No. 25-1150 (D.C. Cir. May 29, 2026) · United States Court of Appeals for the District of Columbia Circuit · May 29, 2026 · No. 25-1150

Summary

The United States Court of Appeals for the District of Columbia Circuit dismissed ModernWest Longmont, LLC’s petition for review of FAA communications concerning the compatibility of proposed housing developments near Vance Brand Airport with federal grant assurances. The court held that ModernWest failed to show that vacating or withdrawing the FAA’s letters would likely cause the City of Longmont to approve the development, and therefore failed to establish redressability and standing. The court also dismissed the petition because ModernWest did not adequately argue or support standing in its opening brief as required by D.C. Circuit Rule 28(a)(7).

Court
United States Court of Appeals for the District of Columbia Circuit
Writing for the Court
Edwards, Senior Circuit Judge; Pillard, Circuit Judge; Garcia, Circuit Judge
Jurisdiction
United States Court of Appeals for the District of Columbia Circuit
Decision date
May 29, 2026
Docket number
25-1150
Procedural posture
Petition for review of a final order and final communication of the Federal Aviation Administration.
Standard of review
The petitioner bears the burden of establishing Article III standing, including injury in fact, traceability, and likely redressability. Where the challenged action affects a regulated third party rather than the petitioner directly, causation and redressability require substantial evidence of a causal relationship and a predictable chain of events. The court also required compliance with D.C. Circuit Rule 28(a)(7), which requires petitioners seeking direct review of administrative action to argue standing and identify supporting evidence in the opening brief.
Precedential value
Published and precedential
Parties
ModernWest Longmont, LLC v. Federal Aviation Administration
Disposition
dismissed

Topics

judicial review of agency actionappellate procedureappellate jurisdictionadministrative lawmunicipal law

Practice areas

administrative lawappellate procedureconstitutional lawreal estate and land usemunicipal law

Questions Presented

  1. Whether ModernWest established standing to challenge the FAA's letters when approval of the proposed developments depended on the independent decisions of the City of Longmont and other considerations.
  2. Whether ModernWest's failure to argue standing and identify supporting evidence in its opening brief required dismissal under D.C. Circuit Rule 28(a)(7).

Holdings

  1. ModernWest lacked Article III standing because it failed to show that vacating and withdrawing the FAA's letters would likely cause the City to approve the proposed developments. The requested relief would not alter the City's continuing legal obligations under Grant Assurance 21, and the City had independent reasons for rejecting the proposal.
  2. ModernWest's failure to argue standing and cite record evidence supporting standing in its opening brief independently required dismissal of the petition under D.C. Circuit Rule 28(a)(7).

Key quotations

ModernWest has not satisfied its burden to show that the likely result of ordering FAA to vacate and withdraw its letters would be the City changing its mind and approving the proposed developments. (10)
At most, withdrawing the letters might give ModernWest “better odds” of a favorable outcome. (14)
For the reasons stated above, ModernWest’s petition for review is dismissed for lack of standing. (16)

Factual background

ModernWest proposed two mixed-use developments near Longmont, Colorado's Vance Brand Airport. Although the FAA issued Determinations of No Hazard, it later advised the City that the developments were incompatible with Grant Assurance 21 and could jeopardize federal airport funding. The City ultimately rejected ModernWest 2 based on the FAA's position, state grant-assurance concerns, independent land-use incompatibility findings, and public-hearing concerns, while ModernWest 1 had not received final approval. ModernWest sought withdrawal of the FAA letters, asserting that doing so would cause the City to approve the developments.

Procedural history

ModernWest sought approval from the City of Longmont for mixed-use developments near Vance Brand Airport. After the FAA sent letters advising the City that the proposed developments were incompatible with Grant Assurance 21, the City effectively denied the proposal. ModernWest petitioned the D.C. Circuit for review and sought vacatur and withdrawal of the FAA letters so that the City could reconsider the development. The court dismissed the petition for lack of standing and for failure to comply with Circuit Rule 28(a)(7).

Court Document

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