Owner self-reported — never independently field-inspected
Location confidence
No coordinate anomaly detected
Terrain cross-check (USGS 3DEP)
FAA 482 ft MSL · USGS ground 45 ft · Δ 437 ft
Differential consistent with an elevated / rooftop pad
Structure cross-check (Overture / OSM)
Rooftop pad — the coordinate falls on a building footprint
Building height ≈ 395 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 →
The recorded pad is 37 ft short of the 100 ft footprint an eVTOL would need — shown to scale.
recorded pad eVTOL FATO
Recorded pad (limiting side)
63 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
High obstacle within 0.5 nm — conflicts with the expanded footprint and 8:1 approach
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.
IBC references NFPA 418 for rooftop facilities. Standalone fire code reference not confirmed.
FAA facility data
FAA LID
4TS0
AIX ID
aix:hp:DN6KY8FW
Lat / Lng
29.75384, -95.36549
Elevation
482 ft MSL
Pad dimensions
63 × 63 ft
Surface type
CONC
Activation date
1985/06
Last owner update
2025/02/26
FAA OEAAA airspace determinations2
Airspace clearance
On file as archived / procedural records — no standing clearance to track.
Filing activity
Most recent determination 1999-04-07
NRAARCH-DeterminedASN 1999-ASW-5533-NRA2002-09-05
Other · 0 ft AGL — CLOSURE OF THE HOUSTON CBD HELIPORT
NRAARCH-DeterminedASN 1991-ASW-432-NRA1998-10-05
Other · 0 ft AGL — NEW REPLACEMENT FOR TEMPORARY CBDLEASE NOT RENEWED ON PRESENT TEMP. HELIPORT (SEE 91 ASW-4323-NRA FOR
Blueprint
The record vs. what we measured
54/100
DATA INTEGRITY
Surface elevation
The FAA record places this pad at 482 ft. USGS terrain plus the building put the actual rooftop at 440 ft — a -42 ft difference the federal record doesn’t carry.
eVTOL footprint
The 63 ft pad is 37 ft short of the 100 ft an eVTOL FATO requires (measured).
SIGNALFEDERAL RECORDMEASURED
Surface elevation482 ft440 ft · USGS+structure
Structurenot on recordRooftop pad
Pad dimensions63 ft side (filed)63 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.
NETRALITY DATA CENTERS, HOUSTON, TX (FAA 4TS0). AirIndex facility record aix:hp:DN6KY8FW. Verifiable at https://www.airindex.io/verify/aix:hp:DN6KY8FW.