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Owner self-reported — never independently field-inspected
Location confidence
No coordinate anomaly detected
Terrain cross-check (USGS 3DEP)
FAA 159 ft MSL · USGS ground 177 ft · Δ -18 ft
Structure cross-check (Overture / OSM)
On a building footprint — height not tagged in the source
Building height ≈ 18 ft — measured independently of the FAA record
Cross-source consensus
Single independent source — no corroboration available
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
CONDITIONALConversion feasibility · four readings, one line each
Obstruction screen
Clear
No obstructions within 0.5 nm on the FAA obstacle file.
Geometry
Requires 45 feet of expansion
Recorded pad side 55 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
Conditional
Obstruction screen passed. Geometry and structural capacity remain open. Site validation required.
The recorded pad is 45 ft short of the 100 ft footprint an eVTOL would need — shown to scale.
recorded pad eVTOL FATO
Recorded pad (limiting side)
55 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.
NFPA 418 adoption status not yet assessed for this jurisdiction.
FAA facility data
FAA LID
85MA
AIX ID
aix:hp:P5XX90WH
Lat / Lng
42.48367, -71.20571
Elevation
159 ft MSL
Pad dimensions
55 × 55 ft
Surface type
CONC
Activation date
2009/05
Last owner update
2026/01/12
FAA OEAAA airspace determinations2
Airspace clearance
On file as archived / procedural records — no standing clearance to track.
Filing activity
Most recent determination 2021-07-07
NRAARCH-DeterminedASN 2021-ANE-1024-NRA2022-06-27
Form 7480 · 20 ft AGL — LAP ASN # 2020-ESA-239-LAP
NRAARCH-DeterminedASN 2007-ANE-87-NRA2007-10-25
Heliport · 0 ft AGL — Move existing landing area to a newly constructed helipad onto hospital property. \r\nFATO 79.5\r\nTLOF 45\r\nIng/Egr 065/245 and 055/235\r\nPavemnet
Blueprint
The record vs. what we measured
70/100
DATA INTEGRITY
Surface elevation
The FAA record places this pad at 159 ft. USGS terrain plus the building put the actual rooftop at 195 ft — a +36 ft difference the federal record doesn’t carry.
eVTOL footprint
The 55 ft pad is 45 ft short of the 100 ft an eVTOL FATO requires (measured).
SIGNALFEDERAL RECORDMEASURED
Surface elevation159 ft195 ft · USGS+structure
Structurenot on recordOn a building
Pad dimensions55 ft side (filed)55 ft side · measured
Coordinate integrityas filedterrain cross-checked
Independent inspectionowner self-reportednone on record
✓Federal record
→
✓Cross-checkedUSGS · Overture · dimensions
→
3Physically verifiedGround Truth capture
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.