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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 153.2 ft MSL · USGS ground 131 ft · Δ 22 ft
Structure cross-check (Overture / OSM)
Ground-level — no building footprint at the coordinate
Cross-source consensus
Single independent source — no corroboration available
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
INFEASIBLE WITHOUT REMEDIATIONConversion feasibility · four readings, one line each
Obstruction screen
Severe
High obstacle within 0.5 nm conflicts with the expanded footprint and the 8:1 approach surface.
Geometry
Requires 45 feet of expansion
Recorded pad side 55 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
Infeasible without remediation
A high obstacle conflicts with the expanded footprint. Remediation or a different site.
The recorded pad is 45 ft short of the 100 ft footprint an eVTOL would need — shown to scale.
recorded pad eVTOL FATO
Recorded pad (limiting side)
55 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
0MD9
AIX ID
aix:hp:C5RQSAE7
Lat / Lng
38.56111, -76.59602
Elevation
153.2 ft MSL
Pad dimensions
55 × 55 ft
Surface type
CONC
Surface condition
GOOD
Activation date
1980/05
Last owner update
2020/08/11
Situations open at this facility1
highsuspect record with trafficopened 2026-09-05 · situation-rules-v1
Record flagged as possibly mislocated at a hospital pad, with 4 observed eVTOL flights in the last 30 days at 1 endpoint within 15 nm (nearest 2W6, 15 nm): aircraft may be routed to a position the record does not support.
Situations are rules-based inferences across the obstruction, observed-operations and record layers, re-evaluated nightly; each carries its evidence and closes when the condition no longer holds.
FAA OEAAA airspace determinations2
Airspace clearance
On file as archived / procedural records — no standing clearance to track.
Filing activity
Most recent determination 2004-07-28
NRAARCH-DeterminedASN 2004-AEA-374-NRA2004-09-24
Other · 1 ft AGL — check tree line and there is a daycare bldg in vacinity. Relocate permanent lcation 110' to the EAST of the existing heliport.
NRAARCH-DeterminedASN 2004-AEA-375-NRA2004-09-24
Other · 1 ft AGL — Temp Heliport to go with case 04-AEA-374-NRA\r\nEMERGENCY DEPT (relocate temp location 200' to the NW of existing heliport)
Blueprint
The record vs. what we measured
60/100
DATA INTEGRITY
eVTOL footprint
The 55 ft pad is 45 ft short of the 100 ft an eVTOL FATO requires (measured).
SIGNALFEDERAL RECORDMEASURED
Surface elevation153.2 ftnot cross-checked
Structurenot on recordGround-level
Pad dimensions55 ft side (filed)55 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.
CALVERT HEALTH MEDICAL CENTER, PRINCE FREDERICK, MD (FAA 0MD9). AirIndex facility record aix:hp:C5RQSAE7. Verifiable at https://www.airindex.io/verify/aix:hp:C5RQSAE7.