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Owner self-reported — never independently field-inspected
Location confidence
No coordinate anomaly detected
Terrain cross-check (USGS 3DEP)
FAA 98 ft MSL · USGS ground 56 ft · Δ 42 ft
Differential consistent with an elevated / rooftop pad
Structure cross-check (Overture / OSM)
Rooftop pad — the coordinate falls on a building footprint
Building height ≈ 30 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 →
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 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
Infeasible without remediation
A high obstacle conflicts with the expanded footprint. Remediation or a different site.
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 2026-ANM-153-NRA: DET-to-Prop
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
WA28
AIX ID
aix:hp:WAFGE6KB
Lat / Lng
47.33288, -122.22282
Elevation
98 ft MSL
Pad dimensions
60 × 60 ft
Surface type
ASPH-TRTD
Surface condition
GOOD
Activation date
1992/01
Last owner update
2020/08/14
FAA OEAAA airspace determinations5
Airspace clearance
On file as archived / procedural records — no standing clearance to track.
Filing activity
Most recent determination 2026-04-13 · 4 in the last 24 months
NRADET-to-PropASN 2026-ANM-1114-NRA2026-05-20
CONSTR. SAFETY PLAN - Miscellaneous · 1 ft AGL — CONSTR. SAFETY PLAN Miscellaneous
NRADET-to-PropASN 2026-ANM-581-NRA2026-05-19
CONSTR. SAFETY PLAN - Miscellaneous · 1 ft AGL — CONSTR. SAFETY PLAN Miscellaneous
NRADET-to-PropASN 2026-ANM-153-NRA2026-03-17
CONSTR. SAFETY PLAN - Miscellaneous · 1 ft AGL — CONSTR. SAFETY PLAN Miscellaneous
NRADET-to-PropASN 2024-ANM-4950-NRA2025-01-07
CONSTR. SAFETY PLAN - Miscellaneous · 1 ft AGL — CONSTR. SAFETY PLAN Miscellaneous
NRAARCH-DeterminedASN 2006-ANM-67-NRA2006-03-22
Heliport · 0 ft AGL — 7480 - relocation of existing heliport.
Safety history (NTSB)1
Accident history
1 NTSB helicopter event within 3 nm since 2010 (1 accident); most recent 2022-06-18.
ACCIDENT0.6 nm2022-06-18
ROBINSON HELICOPTER COMPANY R44 II · Auburn, WA — 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
76/100
DATA INTEGRITY
Surface elevation
The FAA record places this pad at 98 ft. USGS terrain plus the building put the actual rooftop at 86 ft — a -12 ft difference the federal record doesn’t carry.
eVTOL footprint
The 60 ft pad is 40 ft short of the 100 ft an eVTOL FATO requires (measured).
SIGNALFEDERAL RECORDMEASURED
Surface elevation98 ft86 ft · USGS+structure
Structurenot on recordRooftop pad
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.