AirIndex Research · FAA LID 51MA

BSAS# 2

ROCKPORT, MA. Operational · Private use.

OperationalPrivate usePrivate

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Data integrity

67/100
CorroboratedData Integrity Index
Independent inspection
Owner self-reported — never independently field-inspected
Location confidence
No coordinate anomaly detected
Terrain cross-check (USGS 3DEP)
FAA 40 ft MSL · USGS ground 42 ft · Δ -2 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 52 feet of expansion
Recorded pad side 48 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.
100 ft · eVTOL FATO48 ft
The recorded pad is 52 ft short of the 100 ft footprint an eVTOL would need — shown to scale.
recorded pad eVTOL FATO
Recorded pad (limiting side)
48 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
OE3A archive: ASN 2016-ANE-926-NRA determined 2016-10-11
Q3 · State enforcementLIMITED
State has limited enforcement of FAA standards.
Q4 · NFPA 418UNKNOWN
NFPA 418 adoption status not yet assessed for this jurisdiction.

FAA facility data

FAA LID
51MA
AIX ID
aix:hp:M6QHGNQB
Lat / Lng
42.67258, -70.62208
Elevation
40 ft MSL
Pad dimensions
48 × 48 ft
Surface type
TURF
Surface condition
GOOD
Activation date
2013/09
Last owner update
2013/03/27

FAA OEAAA airspace determinations4

Airspace clearance
On file as archived / procedural records — no standing clearance to track.
Filing activity
Most recent determination 2016-07-18
  • NRAARCH-DeterminedASN 2016-ANE-926-NRA
    2016-10-11
    Heliport · 1 ft AGL — Relocation of the 51MA Heliport. 175' NE of the current site on the same property at 129 Granite St Rockport MA
  • NRAARCH-DeterminedASN 2013-ANE-230-NRA
    2013-03-22
    Heliport · 0 ft AGL — Construction of a private use heliport. The heliport is not constructed to date however the owner would like us to consider the following during our review:\r\n1.The Proposed site is 70 to 75 feet wide which is more than 2.5 times my rotor diameter and greater than 2 times my overall length (D).\r\n2.From the TLOF my property extends more than 300 feet east where it meets the Atlantic ocean providing a virtually infinite approach/departure corridor to/from the East. \r\n3.The property is surrounded by rock walls on three sides and the Atlantic Ocean on the fourth.\r\n4.A windsock will be in place prior to use of the heliport on the property line to the South and East of the TLOF.\r\n5.I will excavate the TLOF and FATO within the next two weeks and will sod the soil and mark the TLOF and FATO corners once winter is over.
  • NRAARCH-DeterminedASN 2012-ANE-161-NRA
    2012-06-14
    Heliport · 0 ft AGL — Private use turf heliport. FATO 300x 75; TLOF 75x40.
  • NRAARCH-DeterminedASN 2011-ANE-247-NRA
    2012-01-31
    Heliport · 0 ft AGL — Private use rooftop heliport. FATO 300x 100; TLOF 15x35.
Blueprint
The record vs. what we measured
67/100
DATA INTEGRITY
eVTOL footprint
FATO 100 ft reqHTLOF 48 ft

The 48 ft pad is 52 ft short of the 100 ft an eVTOL FATO requires (measured).

SIGNALFEDERAL RECORDMEASURED
Surface elevation40 ftnot cross-checked
Structurenot on recordGround-level
Pad dimensions48 ft side (filed)48 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.
Request Ground Truth verification

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 assessment

Building 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:M6QHGNQB · Methodology →
Cite this facility

BSAS# 2, ROCKPORT, MA (FAA 51MA). AirIndex facility record aix:hp:M6QHGNQB. Verifiable at https://www.airindex.io/verify/aix:hp:M6QHGNQB.

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AIX-IDs are free to cite and reference; the registry is the source of record. The verify link resolves this record against the audit chain.

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