MIA Runway Overrun Safety & Buffer Analyzer

Verified Source Incident Facts: On September 6, 2026, an Amazon cargo widebody jet (B767-300F class, ~285,000 lbs landing weight) overran the paved runway during landing at Miami International Airport (MIA), breached the perimeter barrier, and struck multiple vehicles on bordering public roadways (NW 72nd Ave / Perimeter Rd corridor), resulting in at least 5 fatalities.

Engineering Simulator Role: Below is an interactive runway overrun kinematics model calculating rollout distance, threshold exit speed, Runway Safety Area (RSA) turf deceleration, Engineered Material Arresting System (EMAS) arrestor performance, and perimeter road impact energies.

Flight & Runway Setup

Presets:

Runway: MIA 9/27 (13,016 ft)

Approach Speed ($V_{app}$): 142 kts

Touchdown Point Downfield: 3,200 ft

Target touchdown zone is 1,000–1,500 ft. Late flare pushes roll deep.

Runway Surface Friction ($\mu$): Wet Contaminated (0.16)

Thrust Reversers: Partial / Inop (30%)

Overrun Safety Treatment: Standard Turf RSA (1,000 ft)

Perimeter Road Setback: 850 ft

Runway Excursion Status

EXCURSION

Breaches threshold

Total Landing Roll

14,280 ft

+1,264 ft beyond paved rwy

Threshold Exit Speed

58.4 kts

Speed leaving pavement

Perimeter Road Impact

39.1 kts

18.4 MJ kinetic energy

Mean Deceleration

0.19 G

Brakes + Aerodynamic + RSA

Paved Runway Pavement

Safe Deceleration Zone

Extended Rollout / Overrun

EMAS Cellular Concrete Bed

Public Perimeter Roadway (NW 72nd Ave)

Impact Penetration Vector

Kinematic Deceleration Model (FAA & NTSB Grounded)

The simulation solves instantaneous deceleration $a(t)$ using the standard multi-force aircraft landing equation:

        a = g · [ μeff · (1 - L/W) + D/W + Trev/W + Farrest/W ]
      

Friction Coefficient (μ): On dry runways, antiskid achieves μ ≈ 0.40–0.50. Dynamic standing water and ungrooved pavement reduce effective wheel braking to μ ≤ 0.16. At speeds above hydroplaning threshold ($V_p \approx 9 \sqrt{tire\_psi}$), tire contact is lost.

EMAS Crushed Concrete Performance: An Engineered Material Arresting System (FAA AC 150/5220-22B) exerts sustained compressive drag of 1.4 to 1.8 G on widebody landing gear bogies, bringing 70-knot excursions to a complete stop inside 350–500 feet before reaching airport perimeter boundaries.

Perimeter Setback & Buffer Comparison

Comparative risk metrics calculated for current settings across airport safety boundaries:

Boundary Marker	Distance	Status	Speed at Crossing	Residual Kinetic Energy

Standard FAA AC 150/5300-13B mandates a 1,000-ft Runway Safety Area (RSA) beyond runway ends. Where physical constraints (public roads, waterways) truncate the RSA, EMAS installation provides equivalent safety.