Owner self-reported — never independently field-inspected
Location confidence
No coordinate anomaly detected
Terrain cross-check (USGS 3DEP)
FAA 930 ft MSL · USGS ground 931 ft · Δ -1 ft
Structure cross-check (Overture / OSM)
Rooftop pad — the coordinate falls on a building footprint
Building height ≈ 51 ft — measured independently of the FAA record
Cross-source consensus
⚠ Sources conflict — pad is on a building, but FAA elevation reads ground level
Stale-low FAA elevation (the 6FD8 class) — never updated for the rooftop pad. Treat the recorded elevation as unreliable.
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 →
This pad already covers the eVTOL landing footprint as it stands.
recorded pad eVTOL FATO
Recorded pad (limiting side)
100 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.
Obstruction clearance
Clear — no obstructions within 0.5 nm on the FAA obstacle file
Measured against FAA pad geometry and federal FATO sizing (EB-105). A dimensional pre-screen — site-level validation required, and independent of the underwriting risk score.
FAA compliance
Q1 · FAA registrationPASS
Active FAA NASR 5010 record.
Q2 · Airspace determinationUNKNOWN
FAA OE/AAA airspace determination data integration pending.
Q3 · State enforcementLIMITED
State has limited enforcement of FAA standards.
Q4 · NFPA 418UNKNOWN
NFPA 418 adoption status not yet assessed for this jurisdiction.
FAA facility data
FAA LID
MY77
AIX ID
aix:hp:HNSECVEF
Lat / Lng
45.01453, -93.32034
Elevation
930 ft MSL
Pad dimensions
120 × 100 ft
Surface type
CONC
Activation date
1986/12
Last owner update
2024/05/29
FAA OEAAA airspace determinations0
No FAA OEAAA determinations linked to this facility.
Blueprint
The record vs. what we measured
53/100
DATA INTEGRITY
Surface elevation
The FAA record places this pad at 930 ft. USGS terrain plus the building put the actual rooftop at 983 ft — a +53 ft difference the federal record doesn’t carry.
eVTOL footprint
Footprint assessment available.
SIGNALFEDERAL RECORDMEASURED
Surface elevation930 ft983 ft · USGS+structure
Structurenot on recordRooftop pad
Pad dimensions100 ft side (filed)100 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.