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Owner self-reported — never independently field-inspected
Location confidence
No coordinate anomaly detected
Terrain cross-check (USGS 3DEP)
FAA 728 ft MSL · USGS ground 625 ft · Δ 103 ft
Differential consistent with an elevated / rooftop pad
Structure cross-check (Overture / OSM)
Rooftop pad — the coordinate falls on a building footprint
Building height ≈ 49 ft — measured independently of the FAA record
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
UNVERIFIEDConversion feasibility · four readings, one line each
Obstruction screen
No data
No FAA obstacle data on file for this state. Clearance unverified.
Geometry
Requires 70 feet of expansion
Recorded pad side 30 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 70 ft short of the 100 ft footprint an eVTOL would need — shown to scale.
recorded pad eVTOL FATO
Recorded pad (limiting side)
30 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.
FAA compliance
Q1 · FAA registrationPASS
Active FAA NASR 5010 record.
Q2 · Airspace determinationON_FILE
OE/AAA ASN 2025-ASO-4235-OE: DET-DNE-TMP
Q3 · State enforcementUNKNOWN
State enforcement posture not yet assessed.
Q4 · NFPA 418UNKNOWN
NFPA 418 adoption status not yet assessed for this jurisdiction.
FAA facility data
FAA LID
AL36
AIX ID
aix:hp:NNT5AZ4V
Lat / Lng
34.72113, -86.58067
Elevation
728 ft MSL
Pad dimensions
30 × 30 ft
Surface type
CONC
Activation date
1981/08
Last owner update
2021/12/20
FAA OEAAA airspace determinations1
Airspace clearance
Airspace clearance on file has lapsed — a re-filing may be needed for new/continued operations. Does not by itself reclassify the existing structure as a hazard.
The FAA record places this pad at 728 ft. USGS terrain plus the building put the actual rooftop at 674 ft — a -54 ft difference the federal record doesn’t carry.
eVTOL footprint
The 30 ft pad is 70 ft short of the 100 ft an eVTOL FATO requires (measured).
SIGNALFEDERAL RECORDMEASURED
Surface elevation728 ft674 ft · USGS+structure
Structurenot on recordRooftop pad
Pad dimensions30 ft side (filed)30 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.
THE HUNTSVILLE HOSPITAL, HUNTSVILLE, AL (FAA AL36). AirIndex facility record aix:hp:NNT5AZ4V. Verifiable at https://www.airindex.io/verify/aix:hp:NNT5AZ4V.