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Owner self-reported — never independently field-inspected
Location confidence
No coordinate anomaly detected
Terrain cross-check (USGS 3DEP)
FAA 8 ft MSL · USGS ground 11 ft · Δ -3 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 40 feet of expansion
Recorded pad side 60 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 40 ft short of the 100 ft footprint an eVTOL would need — shown to scale.
recorded pad eVTOL FATO
Recorded pad (limiting side)
60 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-7621-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
XA80
AIX ID
aix:hp:ERH33EGA
Lat / Lng
27.84639, -97.06306
Elevation
8 ft MSL
Pad dimensions
60 × 60 ft
Surface type
CONC
Activation date
2006/05
Last owner update
2023/12/15
FAA OEAAA airspace determinations3
Airspace clearance
On file as archived / procedural records — no standing clearance to track.
Filing activity
Most recent determination 2025-10-08 · 2 in the last 24 months
NRAARCH-DeterminedASN 2025-ASW-7620-NRA2025-11-10
Form 7480 · 0 ft AGL — LAP ASN # 2025-CSA-587-LAP\r\nAlter location of h1. See notes.
NRAARCH-DeterminedASN 2025-ASW-7621-NRA2025-11-10
Form 7480 · 0 ft AGL — LAP ASN # 2025-CSA-588-LAP\r\nAdd H2.
NRAARCH-DeterminedASN 2005-ASW-318-NRA2006-01-24
Heliport · 0 ft AGL — Notice of landing area proposal for a private use heliport.
Blueprint
The record vs. what we measured
56/100
DATA INTEGRITY
eVTOL footprint
The 60 ft pad is 40 ft short of the 100 ft an eVTOL FATO requires (measured).
SIGNALFEDERAL RECORDMEASURED
Surface elevation8 ftnot cross-checked
Structurenot on recordGround-level
Pad dimensions60 ft side (filed)60 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.
MARTIN ENERGY SVCS HARBOR ISLAND, PORT ARANSAS, TX (FAA XA80). AirIndex facility record aix:hp:ERH33EGA. Verifiable at https://www.airindex.io/verify/aix:hp:ERH33EGA.