AirIndex Research · FAA LID 09W
SOUTH CAPITOL STREET
WASHINGTON, DC — Washington D.C. metro. Operational · Public use.
OperationalPublic usePrivate
← All Washington D.C. heliportsData integrity
79/100
CorroboratedData Integrity IndexIndependent inspection
Agency-inspected (S)
Last inspection record: 1997/12/05
Location confidence
No coordinate anomaly detected
Terrain cross-check (USGS 3DEP)
FAA 10 ft MSL · USGS ground -1 ft · Δ 11 ft
Structure cross-check (Overture / OSM)
Ground-level — no building footprint at the coordinate
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
InfeasibleConversion feasibility · obstruction screen
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.
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.
FAA compliance
Q1 · FAA registrationPASS
Active FAA NASR 5010 record.
Q2 · Airspace determinationUNKNOWN
FAA OE/AAA airspace determination data integration pending.
Q3 · State enforcementMODERATE
State has partial enforcement framework.
Q4 · NFPA 418UNKNOWN
NFPA 418 adoption status not yet assessed for this jurisdiction.
FAA facility data
FAA LID
09W
AIX ID
aix:hp:MKSGB77M
Lat / Lng
38.86872, -77.00748
Elevation
10 ft MSL
Activation date
1974/04
Last inspection
1997/12/05
Last owner update
2003/12/17
FAA OEAAA airspace determinations0
No FAA OEAAA determinations linked to this facility.
Full risk assessment
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.
Request the full assessmentBuilding autonomous systems? See the machine-verified feed
Provenance FAA NASR 5010 · pad dims APT cycle 2026/03/19 · USGS 3DEP terrain · Overture structure · eVTOL screen conversion-feasibility-1.1 · AIX-ID aix:hp:MKSGB77M · Methodology →