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Owner self-reported — never independently field-inspected
Location confidence
No coordinate anomaly detected
Terrain cross-check (USGS 3DEP)
FAA 450 ft MSL · USGS ground 532 ft · Δ -82 ft
Structure cross-check (Overture / OSM)
Rooftop pad — the coordinate falls on a building footprint
Building height ≈ 65 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
UNVERIFIEDConversion feasibility · four readings, one line each
Obstruction screen
No data
No FAA obstacle data on file for this state. Clearance unverified.
Geometry
Requires 50 feet of expansion
Recorded pad side 50 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
Unverified
No obstruction data on file. The dimensional gap applies; clearance is unverified.
The recorded pad is 50 ft short of the 100 ft footprint an eVTOL would need — shown to scale.
recorded pad eVTOL FATO
Recorded pad (limiting side)
50 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
MO55
AIX ID
aix:hp:6E1RBNBW
Lat / Lng
38.62288, -90.23916
Elevation
450 ft MSL
Pad dimensions
50 × 50 ft
Surface type
METAL
Activation date
1988/11
Last owner update
2023/10/03
FAA OEAAA airspace determinations2
Airspace clearance
On file as archived / procedural records — no standing clearance to track.
Filing activity
Most recent determination 2025-12-22 · 1 in the last 24 months
NRAARCH-DeterminedASN 2025-ACE-5248-NRA2026-02-18
Form 7480 · 197 ft AGL — LAP ASN # 2025-CSA-664-LAP\r\nAdd H2
NRAARCH-DeterminedASN 2015-ACE-1749-NRA2015-08-04
Heliport · 0 ft AGL — STL FSDO to assess the safe and efficient use of this VFR hospital heliport's navigable airspace as part of the investigation from a helicopter accident on March 6 2015. The facility was established in 1988 and no site inspections have been conducted since it was constructed.
Safety history (NTSB)1
Fatal event historyair-medical exposure
1 NTSB helicopter event within 3 nm since 2010 (1 accident, 1 fatal); most recent 2015-03-07.
1 event with a fatality · 1 air-medical (EMS) event
ACCIDENTFATALEMS0.3 nm2015-03-07
Airbus Helicopters (Eurocopte EC-130-B4 · St Louis, MO — 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
54/100
DATA INTEGRITY
Surface elevation
The FAA record places this pad at 450 ft. USGS terrain plus the building put the actual rooftop at 597 ft — a +147 ft difference the federal record doesn’t carry.
eVTOL footprint
The 50 ft pad is 50 ft short of the 100 ft an eVTOL FATO requires (measured).
SIGNALFEDERAL RECORDMEASURED
Surface elevation450 ft597 ft · USGS+structure
Structurenot on recordRooftop pad
Pad dimensions50 ft side (filed)50 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.
SSM HEALTH ST LOUIS UNIVERSITY HOSPITAL, ST LOUIS, MO (FAA MO55). AirIndex facility record aix:hp:6E1RBNBW. Verifiable at https://www.airindex.io/verify/aix:hp:6E1RBNBW.