The State of FAA Obstruction Filings (2026 edition): aggregate tables
https://los-analyzer.idea-engine.studio/reports/faa-obstruction-filings-2026

Source: FAA Obstruction Evaluation / Airport Airspace Analysis (OE/AAA) public archive (oeaaa.faa.gov), data as of September 12, 2026. Compiled by LOS Analyzer (Idea Engine LLC). This is not an official FAA record or an FAA determination; the FAA's portal is authoritative. LOS Analyzer is not affiliated with or endorsed by the FAA.

Compiled analysis © Idea Engine LLC, licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) — credit 'LOS Analyzer'. Underlying FAA data is public domain.

Corrected 2026-10-02
- expiring-determinations.csv now counts No Hazard determinations only. An
  earlier version also counted "To Proponent" cases, which are not a
  determination of no hazard.
- Every table moved from the August 22, 2026 archive to the September 12, 2026
  archive.

What these files count
- Off-airport Part 77 notices (filings) in the FAA's public archive. A notice is a
  proposal, not a structure that was built.
- Tables that name a party list organisations only. Filings the pipeline
  identifies as made by private individuals are left out of those tables.
- "2025 onward" means cases numbered 2025 or 2026. 2026 is a partial year.
- Method and known limits:
  https://los-analyzer.idea-engine.studio/reports/faa-obstruction-filings-2026#methodology

Files
- filings-by-year.csv              notices per year, 2015 onward
- structure-type-by-year.csv       notices per year by structure type, 2015 onward
- filings-by-structure-type.csv    notices by structure type, 2025 onward
- faa-review-turnaround.csv        days from filing to determination by structure type,
                                   2025 onward (types with at least 500 determinations)
- filings-by-state.csv             notices by state, 2025 onward
- filings-by-airport.csv           the 25 nearest airports named most often, 2025 onward
- determinations.csv               determination outcomes, 2025 onward
- top-representatives.csv          the 25 organisations filing most often on someone
                                   else's behalf, 2025 onward
- top-sponsors.csv                 the 25 organisation sponsors filing most often,
                                   2025 onward
- expiring-determinations.csv      No Hazard determinations on organisation-sponsored
                                   cases with no recorded build date, by month of
                                   expiry, for the twelve full months after the
                                   archive date
- height-bands.csv                 notices by proposed height above ground, 2025 onward

Corrections: support@idea-engine.studio