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Ground-level — no building footprint at the coordinate
Cross-source consensus
Corroborated — terrain and structure agree (2/2 sources)
Cross-checked against independent public data — USGS 3DEP terrain, Overture/OSM building footprints, the federal hospital registry, and measured dimensions. The State of the U.S. Heliport Record →
eVTOL readiness
INFEASIBLE WITHOUT REMEDIATIONConversion feasibility · four readings, one line each
Obstruction screen
Severe
High obstacle within 0.5 nm conflicts with the expanded footprint and the 8:1 approach surface.
Geometry
Requires 38 feet of expansion
Recorded pad side 62 ft against a 100 ft eVTOL FATO.
Structural FATO
Unverified
The full 100 × 100 ft FATO must be load-bearing. The FAA does not record structural capacity, so no record can confirm it.
Overall
Infeasible without remediation
A high obstacle conflicts with the expanded footprint. Remediation or a different site.
The recorded pad is 38 ft short of the 100 ft footprint an eVTOL would need — shown to scale.
recorded pad eVTOL FATO
Recorded pad (limiting side)
62 ft
eVTOL FATO required
100 ft
FAA EB-105 vertiport pattern — 2× a ~50 ft eVTOL controlling dimension, plus a 125 ft safety-area side.
Load-bearing FATO
100 × 100 ft must be structural
No heliport precedent — typically the binding gate for rooftop and hospital pads.
Measured against FAA pad geometry and federal FATO sizing (EB-105). The obstruction screen is the only reading the engine verdict rests on; geometry and structural capacity are stated separately and never folded into it. A dimensional pre-screen — site-level validation required, and independent of the underwriting risk score.
2 structures determined near the pad · tallest 484 ft AGL
Filing activity
Most recent determination 2026-04-28 · 2 in the last 24 months
OECIRASN 2026-AEA-5422-OE
BUILDING$SKYSCRAPER · 454 ft AGL — 1 GOUVERNEUR LANE (aka 77 Water Street)
OECIRASN 2026-AEA-5685-OE
BUILDING$SKYSCRAPER · 484 ft AGL — 1 GOUVERNEUR LANE (aka 77 Water Street)
NRAARCH-DeterminedASN 2006-AEA-294-NRA2006-07-03
Heliport · 1 ft AGL — Private use heliport deactivation\r\nSite # 15784.7*H\r\n\r\nTHIS IS NOT THE PA DOWNTOWN WALL STREET HELIPORT THAT ONE'S PUBLIC USE AND STILL GOING STRONG.
Safety history (NTSB)1
Accident history
1 NTSB helicopter event within 3 nm since 2010 (1 accident); most recent 2021-12-13.
ACCIDENT0.0 nm2021-12-13
BELL HELICOPTER TEXTRON CANADA 429 · Manhattan, NY — NTSB CAROL
NTSB helicopter accidents & incidents geocoded within 3 nm of this pad and attributed to the nearest facility — proximity, not a determination that an event occurred at this site. Source: NTSB aviation accident database.
Blueprint
The record vs. what we measured
96/100
DATA INTEGRITY
eVTOL footprint
The 62 ft pad is 38 ft short of the 100 ft an eVTOL FATO requires (measured).
SIGNALFEDERAL RECORDMEASURED
Surface elevation7 ftnot cross-checked
Structurenot on recordGround-level
Pad dimensions62 ft side (filed)62 ft side · measured
Obstructions, exact FATO geometry, surface condition, and downwash exposure require a physical Ground Truth capture — not shown above as measured. A field verification completes the record and writes the measured truth to this facility’s authority.
This page is the public data-integrity record. The full RiskIndex assessment — Q1–Q5 compliance, dimensional / FATO analysis, an underwriting-grade risk score, peer benchmark, and a sealed Site Intelligence Report — is available on request.