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Owner self-reported — never independently field-inspected
Location confidence
No coordinate anomaly detected
Terrain cross-check (USGS 3DEP)
FAA 1580 ft MSL · USGS ground 1580 ft · Δ 0 ft
Structure cross-check (Overture / OSM)
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
CONDITIONALConversion feasibility · four readings, one line each
Obstruction screen
Clear
No obstructions within 0.5 nm on the FAA obstacle file.
Geometry
Requires 80 feet of expansion
Recorded pad side 20 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 80 ft short of the 100 ft footprint an eVTOL would need — shown to scale.
recorded pad eVTOL FATO
Recorded pad (limiting side)
20 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
89TN
AIX ID
aix:hp:5R4HNY43
Lat / Lng
36.43255, -82.29404
Elevation
1580 ft MSL
Pad dimensions
48 × 20 ft
Surface type
CONC
Surface condition
GOOD
Activation date
2009/07
Last owner update
2023/09/15
FAA OEAAA airspace determinations3
Airspace clearance
On file as archived / procedural records — no standing clearance to track.
Filing activity
Most recent determination 2014-06-12
NRAARCH-DeterminedASN 2014-ASO-1939-NRA2016-11-25
Heliport · 0 ft AGL — Sponsor proposes additional helipad. Designated in database as Proposed H2. TRI is located 5.9 NM Northwest from proposed site.
NRAARCH-DeterminedASN 2008-ASO-828-NRA2009-02-06
Heliport · 0 ft AGL — EXISTING HELIPAD. The circle search for this helipad shows 4 landing areas within 5 nautical miles. The closest to this one is also owned by the proponent of this study.
NRAARCH-DeterminedASN 2005-ASO-366-NRA2006-08-30
Heliport · 0 ft AGL — ALTERATION OF EXISTING HELIPAD. MOVED HELIPAD APPROXIMATELY 0.7 NM ON 088 DEG. HEADING. SUPPORTING DOCUMENTS WILL BE SENT IN THE MAIL.
Blueprint
The record vs. what we measured
62/100
DATA INTEGRITY
eVTOL footprint
The 20 ft pad is 80 ft short of the 100 ft an eVTOL FATO requires (measured).
SIGNALFEDERAL RECORDMEASURED
Surface elevation1580 ftnot cross-checked
Structurenot on recordGround-level
Pad dimensions20 ft side (filed)20 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.