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Owner self-reported — never independently field-inspected
Location confidence
⚠ Location-suspect — recorded coordinates may be mislocated
Terrain cross-check (USGS 3DEP)
FAA 670 ft MSL · USGS ground 640 ft · Δ 30 ft
Differential consistent with an elevated / rooftop pad
Structure cross-check (Overture / OSM)
Ground-level — no building footprint at the coordinate
Cross-source consensus
⚠ Sources conflict — FAA elevation sits above terrain, but no building is at the coordinate
Either a freestanding / tower pad or a mislocated coordinate — independent verification recommended.
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 60 feet of expansion
Recorded pad side 40 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 60 ft short of the 100 ft footprint an eVTOL would need — shown to scale.
recorded pad eVTOL FATO
Recorded pad (limiting side)
40 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-ASW-6521-NRA: DET-to-Prop
Q3 · State enforcementLIMITED
State has limited enforcement of FAA standards.
Q4 · NFPA 418PARTIAL
IBC references NFPA 418 for rooftop facilities. Standalone fire code reference not confirmed.
FAA facility data
FAA LID
51XA
AIX ID
aix:hp:4HFG282B
Lat / Lng
33.16097, -96.63637
Elevation
670 ft MSL
Pad dimensions
40 × 40 ft
Surface type
CONC
Surface condition
FAIR
Activation date
2022/01
Last owner update
2026/02/05
FAA OEAAA airspace determinations3
Airspace clearance
On file as archived / procedural records — no standing clearance to track.
Filing activity
Most recent determination 2025-08-15 · 1 in the last 24 months
NRAARCH-DeterminedASN 2025-ASW-6521-NRA2025-09-09
Form 7480 · 0 ft AGL — LAP ASN # 2025-CSA-424-LAP\r\nPEP submittal to alter H2. See case notes.
NRAARCH-DeterminedASN 2017-ASW-5691-NRA2018-02-08
Heliport · 1 ft AGL — LAP ASN # 2017-CSA-17-LAP
NRAARCH-DeterminedASN 1998-ASW-5511-NRA1998-10-07
Other · 0 ft AGL — PRIVATE USE HELIPAD FOR HOSPITALPRIVATE HELIPAD
Safety history (NTSB)1
Accident history
1 NTSB helicopter event within 3 nm since 2010 (1 accident); most recent 2021-12-09.
1 with serious injury
ACCIDENT2.5 nm2021-12-09
CHR International Safari 400 · McKinney, TX — 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
72/100
DATA INTEGRITY
eVTOL footprint
The 40 ft pad is 60 ft short of the 100 ft an eVTOL FATO requires (measured).
SIGNALFEDERAL RECORDMEASURED
Surface elevation670 ftnot cross-checked
Structurenot on recordGround-level
Pad dimensions40 ft side (filed)40 ft side · measured
Coordinate integrityas filed⚠ location-suspect
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.
MEDICAL CITY MCKINNEY, MCKINNEY, TX (FAA 51XA). AirIndex facility record aix:hp:4HFG282B. Verifiable at https://www.airindex.io/verify/aix:hp:4HFG282B.