Tools chosen: kalshi_direct claude_news gdelt_news congress_bills kalshi_related polymarket_related wikipedia code_execution

Sub-questions (Fermi decomposition)

Planner reasoning

This hinges on the status of FAA rulemaking to repeal 14 CFR 91.817 following Trump's June 2025 executive order directing repeal within 180 days, plus any congressional action (Supersonic Aviation Modernization Act) and Boom Supersonic developments. Key research: current Kalshi price anchor, NPRM/final rule status in the Federal Register, typical FAA rulemaking timelines, and legislative vehicles.

# Current state The FAA published its NPRM ("Enabling Supersonic Overland Flight") on 2026-07-02, proposing to replace the blanket Mach-1 ban (14 CFR 91.817) with a performance-based sonic-boom overpressure standard (0.11 psf). This satisfies Trump's EO 14304 (2025-06-06) 180-day NPRM directive (with slippage — NPRM came ~13 months after the EO, not 180 days, but still ahead of the EO's 18-month outer NPRM deadline). The ban is NOT yet repealed; only the proposal has been issued. A final rule is required to actually lift 91.817, targeted per the EO for final noise-certification standards by ~June 2027 — before the market's 2028-01-01 close, but not guaranteed given comment periods, environmental review, and active opposition (Earthjustice/Sierra Club). # Timeline of key events - 2025-01-28 (confirmed): Boom XB-1 breaks sound barrier over Mojave, demonstrating low-boom feasibility — Wikipedia. - 2025-06-06 (confirmed): Trump signs EO 14304 "Leading the World in Supersonic Flight," directing FAA to repeal 91.817 within 180 days and issue an NPRM for a Part 36 noise-cert standard within 18 months — Federal Register. - 2026-05-30 to 2026-06-13 (confirmed): NASA X-59 quiet supersonic demonstrator breaks sound barrier, bolstering technical case for low-boom overland flight — flyingmag/livescience. - 2026-07-02 (confirmed): FAA publishes NPRM proposing to end the overland ban, replacing it with a 0.11 psf sonic-boom overpressure limit — FAA.gov, DOT, Holland & Knight. - 2026-07-06 to 2026-07-24 (confirmed): Wide press coverage of NPRM ("FAA Proposes to End Ban," Reason, Mondaq, LA Mag) — comment period underway. - 2026-07-22 (confirmed): Senate Commerce Committee orders S.1759 (Supersonic Aviation Modernization Act) reported favorably with amendment — Congress.gov. - 2026-08-18 (confirmed): Earthjustice & Sierra Club formally urge FAA to retain the ban, signaling likely legal/comment opposition — CleanTechnica. - 2026-08-22 (reported): "FAA Supersonic Ban Faces Challenge" headline — opposition mounting — Aero-News Network. - EO-stated target ~2027-06: Final noise-certification standards / final rule (not yet reached). # Event Will the FAA's ban on civilian supersonic flight over land (14 CFR 91.817) end before 2028? # Outcomes to forecast Yes / No # Kalshi market anchor **Current YES price: 68%** (as of latest data). 7-day change: +1pt; 30-day change: +26pts (rose sharply, consistent with July 2026 NPRM news). Price range over 59 days: 40%–84%. Average daily volume: 101 contracts (thin/moderate liquidity). This is the primary consensus anchor — treat all other model outputs as secondary. # Sub-question answers 1. **Kalshi price/trend** — 68% YES, up 26pts in 30 days, reflecting NPRM publication; volume modest (~101/day) — kalshi_direct. 2. **FAA rulemaking status** — NPRM published 2026-07-02 proposing repeal of 91.817 and a 0.11 psf overpressure standard; comment period open as of Aug 2026 (exact close date not stated in research) — FAA.gov/DOT/Holland & Knight. 3. **EO 180-day deadline** — EO required NPRM within 180 days (~Dec 2025) but FAA published July 2026, ~7 months late; the 18-month outer NPRM deadline was still met — Federal Register, claude_news synthesis. 4. **Typical rulemaking duration / fast-track options** — No direct-final-rule mechanism mentioned; standard FAA significant-rule process historically takes ~500 days (16-17 months) NPRM-to-final per code_execution model; EO targets final standards by June 2027, i.e., ~11 months post-NPRM (faster than median, indicating political pressure for expedited action). 5. **Pending legislation** — Supersonic Aviation Modernization Act (S.1759/HR.3410) advancing: Senate Commerce ordered S.1759 reported favorably 2026-07-22; HR.3410 referred to Senate Commerce 2026-03-25 — congress_bills. Could codify/accelerate noise-based standard independent of FAA rulemaking timeline. 6. **Resolution trigger** — Market description says "if the FAA's ban... ends before Jan 1, 2028" — implies a final rule taking legal effect, not merely NPRM issuance; must be accompanied by the Part 36 noise-certification standard per EO structure. NPRM alone (already published) likely does NOT resolve Yes. 7. **Manufacturer timelines** — Boom Supersonic's Overture targeted for service ~2029; XB-1 demonstrated Mach 1+ flight Jan 2025; no explicit lobbying date found beyond general industry support implied by EO and NPRM — Wikipedia, claude_news (commercial service "projected by 2030" per one source, in tension with EO's 2027 regulatory target). # Key facts (high-confidence, factual) 1. [Federal Register] EO 14304 signed 2025-06-06 directs FAA repeal + interim standard within 180 days, NPRM within 18 months. 2. [FAA.gov/DOT] NPRM published 2026-07-02 proposing 0.11 psf sonic-boom standard. 3. [GT Law] EO final noise-certification standard target: June 2027. 4. [Congress.gov] S.1759 advanced out of Senate Commerce Committee 2026-07-22. 5. [CleanTechnica] Environmental groups actively opposing repeal (Aug 2026), raising litigation/delay risk. 6. [Kalshi] Market YES = 68%, up sharply post-NPRM. # Cross-market signals - Kalshi related: KXSONICS-30 (Seattle SuperSonics NBA team, irrelevant) — no signal. No other Kalshi supersonic-ban markets found. - Polymarket: No matching markets found (0/100 scanned). - Sportsbook implied: N/A (not a sports event). # Analyst opinions and speculation - code_execution Monte Carlo (NPRM→final rule timing model): base case ~63% probability final rule effective before 2028; fast-track scenario 86.6%; slow/litigation scenario 40.3%. After discounting for stall/abandonment/litigation risk, model author suggests synthesized ~40-50% — but this used stale/illustrative Kalshi prices (21-34%) that do NOT match the actual live price (68%), so its calibration reasoning is partly outdated/miscalibrated. - Visaverge: commercial service "projected by 2030," implying final regulatory clearance could come earlier (2027) — consistent with EO timeline. # Directional lean per outcome - **Yes**: NPRM issued on schedule with EO's 18-month NPRM deadline; strong administration priority (named EO); Congress separately advancing codifying legislation (S.1759); Kalshi price rose 26pts to 68% after NPRM news, reflecting market confidence in on-time final rule (~11 months post-NPRM, faster than historical median but plausible given political priority). - **No**: Environmental/legal opposition (Earthjustice, Sierra Club) explicitly urging FAA to retain ban — litigation risk could delay past 2027-2028; EO's 180-day initial deadline was already missed by ~7 months, showing execution slippage; historical FAA significant-rule median (~500 days NPRM-to-final) would land close to or past the deadline if delays recur; "ban ending" per market rules likely requires final rule in effect, a higher bar than NPRM issuance already achieved. # Gaps / unknowns - Exact comment period close date for the NPRM not specified in research. - Whether market resolves on final rule publication date or effective date (could differ by weeks/months). - No confirmation of NEPA review status or litigation actually filed (only advocacy letters found). - Status/passage likelihood of S.1759/HR.3410 in full Senate/House unclear. - No Boom Supersonic direct lobbying statements on specific dates found. # Calibration anchors - Kalshi current YES price: **68%** (primary anchor). - 30-day price move (+26pts) shows market reacted bullishly to July 2026 NPRM news — a concrete regulatory event, not mere sentiment. - Precedent: NPRM-to-final-rule for significant FAA rules typically 12-24 months; EO target (final standard by June 2027, ~11 months post-NPRM) is aggressive but not unprecedented under presidential priority directives.

1. Both forecasts converge almost identically (66% Yes) and shade only trivially below the 68% Kalshi anchor, but neither seriously engages with the code_execution Monte Carlo's slow/litigation scenario (40.3%) or explains why that scenario should be weighted lightly beyond dismissing it as "stale" — the litigation risk itself (Earthjustice/Sierra Club) is current and unaddressed quantitatively. 2. Neither forecast grapples with the resolution-ambiguity gap flagged in the brief: "Whether market resolves on final rule publication date or effective date (could differ by weeks/months)" — this is a binary-relevant distinction near a hard deadline (Jan 1, 2028) that could easily flip the outcome, yet both treat it as a minor footnote rather than a source of real variance. 3. Both forecasters anchor tightly on the ~11-month EO target (NPRM to June 2027 final) as "faster than historical median but plausible," but the brief's own data point that the FAA already missed its 180-day interim deadline by ~7 months (a ~4x slippage) should arguably compress confidence more than a token 2pt discount from Kalshi. 4. Neither forecast incorporates S.1759/HR.3410 as a potential alternate pathway to resolution independent of FAA rulemaking delays — if Congress codifies the noise standard legislatively before FAA finalizes its rule, this could either accelerate Yes or create resolution ambiguity (does legislative repeal count as "the ban ending"?), a scenario the brief flags but both forecasts ignore. 5. Both forecasts essentially just anchor near Kalshi with cosmetic rationale differences (0.66 vs 0.66), showing no independent triangulation — given the brief explicitly warns the market has thin liquidity (~101 contracts/day) and a wide 59-day range (40%-84%), more independent stress-testing of the 68% figure (rather than converging on nearly identical numbers) would be expected from "independent" forecasters. 6. Neither considers the tail scenario where litigation actually gets filed (not just advocacy letters) and results in a court-ordered stay or remand — a discrete, high-impact event that could push the timeline well past 2028 regardless of the FAA's internal rulemaking pace, and the brief notes "No confirmation of NEPA review status or litigation actually filed" as an unresolved gap that deserves more explicit downside weighting.

63% (61% confidence)

Yes: 63% No: 37%

The July 2026 NPRM is a concrete, major step and justifies the market's sharp repricing, but resolution almost certainly requires a final rule in legal effect before 2028 — a higher bar. The historical ~500-day NPRM-to-final median lands in late 2027, uncomfortably close to the deadline, and the FAA's ~7-month slippage on the EO's 180-day interim directive is evidence of execution drift rather than acceleration. The critique's points about unquantified litigation/NEPA risk (Earthjustice/Sierra Club) and the publication-vs-effective-date ambiguity are legitimate sources of downside variance that both forecasters underweighted, while S.1759 offers only a modest offsetting alternate pathway (full passage plus enactment before 2028 is itself uncertain). Given thin market liquidity (~101 contracts/day) and a wide 40–84% range, the 68% anchor deserves less deference than usual, so I settle modestly below both the market and the converging 66% forecasts.

Total pipeline time: 277.9s