Owner self-reported — never independently field-inspected
Location confidence
No coordinate anomaly detected
Terrain cross-check (USGS 3DEP)
FAA 1275 ft MSL · USGS ground 1210 ft · Δ 65 ft
Differential consistent with an elevated / rooftop pad
Structure cross-check (Overture / OSM)
On a building footprint — height not tagged in the source
Building height ≈ 18 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 57 ft short of the 100 ft footprint an eVTOL would need — shown to scale.
recorded pad eVTOL FATO
Recorded pad (limiting side)
43 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
AZ77
AIX ID
aix:hp:1M8K0RK4
Lat / Lng
33.28610, -111.85661
Elevation
1275 ft MSL
Pad dimensions
43 × 43 ft
Surface type
MATS
Surface condition
GOOD
Activation date
2020/11
Last owner update
2022/02/14
FAA OEAAA airspace determinations1
Airspace clearance
On file as archived / procedural records — no standing clearance to track.
Filing activity
Most recent determination 2019-04-01
NRAARCH-DeterminedASN 2019-AWP-1491-NRA2019-07-03
Form 7480 · 180 ft AGL — LAP ASN # 2019-WSA-19-LAP. Creation of new elevated hospital helipad.
Safety history (NTSB)1
Fatal event history
1 NTSB helicopter event within 3 nm since 2010 (1 accident, 1 fatal); most recent 2021-10-01.
1 event with a fatality
ACCIDENTFATAL2.5 nm2021-10-01
ROBINSON HELICOPTER COMPANY R22 · Chandler, AZ — 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
70/100
DATA INTEGRITY
Surface elevation
The FAA record places this pad at 1275 ft. USGS terrain plus the building put the actual rooftop at 1228 ft — a -47 ft difference the federal record doesn’t carry.
eVTOL footprint
The 43 ft pad is 57 ft short of the 100 ft an eVTOL FATO requires (measured).
SIGNALFEDERAL RECORDMEASURED
Surface elevation1275 ft1228 ft · USGS+structure
Structurenot on recordOn a building
Pad dimensions43 ft side (filed)43 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.