Volcanic Eruption Flight Safety & Airspace Closure Impact Analyzer

Tactical Airspace & Corridor Risk Projection

D3 LIVE RENDER

Tactical Map Legend:

Severe Ash (>4 mg/m³) Moderate Ash (2-4 mg/m³) Alternative Route

Vent Coordinates: 2°18'N, 125°22'E (Mount Ruang) Buffer Projection: Sectorized Great Circle

Calculated Airspace Telemetry

Severe Airspace Hazard

Closure Probability

94.5%

Est. Airport Closure

36hrs

Rec. Diversion Route

185NM

Additional Fuel Req.

4,250lbs

Turbine Ingestion Threat: High - Immediate Ingestion Hazard

Ash Density (mg/m³): 12.4

Eruption Altitude (ft): 45,000

Plume Bearing (°): 115°

Wind Velocity (kts): 28

Target Airport Dist (NM): 65

Aircraft Class

Commercial Aircraft Engine Vulnerability Matrix

Engine Series / Type	Critical Glassification Temp	Max Ash Ceiling	Current Operational Status
CFM56-7B / LEAP-1A B737, A320neo family	1,150°C - 1,200°C	2.0 mg/m³	Ground Stop Mandate
GE90-115B / Trent XWB B777, A350 long-haul	1,250°C - 1,400°C	2.0 mg/m³	Restricted / Diversion
PW127M Turboprop ATR-72 regional fleet	850°C - 950°C	0.5 mg/m³	Immediate Grounding

VAAC Protocol & Decision Criteria

Aviation Rule EUR/NAT 019: Airspace with predicted volcanic ash concentrations exceeding 2.0 × 10⁻³ g/m³ (2.0 mg/m³) is designated as an area of High Contamination. Flight plans crossing this boundary are subject to immediate air traffic flow ground stop (GS) or rerouting.

Silicate Glassification: Volcanic ash melts inside jet turbine combustion chambers at temperatures around 1,100°C, producing molten glass slag that coats turbine nozzle vanes, degrades cooling passages, and induces uncommanded engine flameout.

Representative Event Grounding: Eruption of Indonesia's Mount Ruang (North Sulawesi) resulted in closure of Sam Ratulangi Airport (MDC) and extensive cancellations at regional hubs including DPS & BKI.