Live Flagship Index ELEVATED STRAIN Week of 2026-10-19

Airline Pressure Index

Commercial Aviation & Supply Chain Jet Fuel Margins, Engine Inspections & ATC Delays

COMPOSITE SCORE

130.1

arrow_upward +1.1 vs last week

Operating Pressure Gauge

ELEVATED STRAIN (100 = baseline)

130.1 / 200

vs baseline: +30.1
vs last week: +1.1

CALM (<90) NORMAL (90–115) ELEVATED (115–140) SEVERE (140–170) CRITICAL (170+)

Stress Test Simulator

ELEVATED STRAIN (what-if sensitivity test)

130.1

Simulated Index

Fuel Crack ($) $91

Grounding (%) 13.5%

ATC Delay (m) 2.13m

Detour (%) 4.8%

Adjust operational & fuel levers to model dynamic industry stress.

Key Drivers

Threat Level ELEVATED STRAIN

Top Driver Jet Fuel Crack Spread +25.0 pts

Jet Fuel Crack $91.38/bbl (100% stress)

Fleet Grounding 13.5% of fleet

ATFM Delay 2.13 min/flt

Airspace Detours 4.8% overhead

Equity Ratio (JETS) 95.0/100

Weekly Score Trajectory

52-week composite trajectory vs 100.0 baseline

Loading trajectory chart…

View trajectory as a data table (58 weeks)

API-INDEX composite score by week
Week starting	Composite score	Level	Fuel Crack ($/bbl)	Fleet Grounding (%)
2025-08-18	96.0	Normal Baseline	27.08	7.3%
2025-08-25	95.6	Normal Baseline	27.08	7.5%
2025-09-01	97.2	Normal Baseline	30.55	7.3%
2025-09-08	99.0	Normal Baseline	29.19	7.8%
2025-09-15	98.4	Normal Baseline	29.87	8.3%
2025-09-22	100.1	Normal Baseline	31.88	8.5%
2025-09-29	100.3	Normal Baseline	29.39	8.6%
2025-10-06	98.5	Normal Baseline	29.85	8.4%
2025-10-13	99.2	Normal Baseline	30.27	8.7%
2025-10-20	102.0	Normal Baseline	34.99	8.7%
2025-10-27	105.7	Normal Baseline	37.04	9.0%
2025-11-03	109.4	Normal Baseline	40.62	9.1%
2025-11-10	112.2	Normal Baseline	41.92	9.3%
2025-11-17	112.8	Normal Baseline	40.61	9.4%
2025-11-24	108.6	Normal Baseline	34.79	9.5%
2025-12-01	103.7	Normal Baseline	35.49	9.5%
2025-12-08	99.6	Normal Baseline	31.20	9.4%
2025-12-15	95.4	Normal Baseline	28.65	9.6%
2025-12-22	94.0	Normal Baseline	27.85	9.5%
2025-12-29	93.9	Normal Baseline	28.08	9.6%
2026-01-05	93.0	Normal Baseline	26.33	9.5%
2026-01-12	94.8	Normal Baseline	29.85	9.6%
2026-01-19	101.3	Normal Baseline	36.12	9.6%
2026-01-26	108.1	Normal Baseline	44.21	9.3%
2026-02-02	104.8	Normal Baseline	33.31	9.6%
2026-02-09	98.0	Normal Baseline	32.54	9.5%
2026-02-16	100.4	Normal Baseline	36.84	9.7%
2026-02-23	105.9	Normal Baseline	39.70	9.5%
2026-03-02	112.9	Normal Baseline	59.45	9.7%
2026-03-09	118.2	Elevated Strain	65.48	9.8%
2026-03-16	118.8	Elevated Strain	81.36	9.9%
2026-03-23	117.5	Elevated Strain	76.24	10.0%
2026-03-30	118.1	Elevated Strain	74.14	10.0%
2026-04-06	117.6	Elevated Strain	62.79	10.1%
2026-04-13	115.1	Elevated Strain	52.31	10.3%
2026-04-20	116.4	Elevated Strain	57.94	10.5%
2026-04-27	117.9	Elevated Strain	57.58	10.5%
2026-05-04	117.8	Elevated Strain	62.47	10.3%
2026-05-11	119.8	Elevated Strain	60.98	10.8%
2026-05-18	121.2	Elevated Strain	59.75	11.2%
2026-05-25	120.9	Elevated Strain	56.52	11.2%
2026-06-01	122.0	Elevated Strain	57.58	11.5%
2026-06-08	122.5	Elevated Strain	55.65	11.7%
2026-06-15	122.6	Elevated Strain	53.58	11.7%
2026-06-22	123.2	Elevated Strain	62.75	12.0%
2026-06-29	123.5	Elevated Strain	64.65	12.2%
2026-07-06	124.7	Elevated Strain	73.23	12.4%
2026-07-13	125.7	Elevated Strain	82.61	12.6%
2026-07-20	127.2	Elevated Strain	78.81	12.8%
2026-07-27	127.1	Elevated Strain	82.98	12.9%
2026-08-03	125.9	Elevated Strain	80.35	13.2%
2026-08-10	125.5	Elevated Strain	91.36	13.1%
2026-08-17	127.6	Elevated Strain	89.77	13.5%
2026-08-31	127.9	Elevated Strain	96.74	13.5%
2026-09-07	127.9	Elevated Strain	94.41	13.5%
2026-09-14	128.3	Elevated Strain	102.43	13.5%
2026-09-21	129.0	Elevated Strain	89.97	13.5%
2026-10-12	130.1	Elevated Strain	91.42	13.5%

Regional Stress Contribution Analysis

Distinct localized operational stress contributions and primary bottlenecks (normalized per flight and fleet unit vs 100.0 baseline)

Loading regional contribution chart…

South Asia 139.2

India, Pakistan, Bangladesh, Sri Lanka

#1 Bottleneck: Engine Inspection Groundings (GTF)

Constitutes 42% of strain.

Middle East 136.5

GCC, Levant, Iraq, Iran

#1 Bottleneck: Airspace Closures & Warzone Detours

Constitutes 48% of strain.

Africa 133.8

North, West, East, South Africa

#1 Bottleneck: Fuel Import Logistics & FX Repatriation

Constitutes 52% of strain.

Europe 130.4

EU, UK, Turkey

#1 Bottleneck: Eurocontrol ATC Network Bottlenecks

Constitutes 38% of strain.

South East Asia 124.0

ASEAN Nations

#1 Bottleneck: LCC Engine Inspection Cycles

Constitutes 32% of strain.

South West Pacific 119.5

Australia, New Zealand, Pacific

#1 Bottleneck: Ultra-Long-Haul Fuel Sensitivity

Constitutes 45% of strain.

Americas 118.6

North America & Latin America

#1 Bottleneck: USGC Jet Fuel Crack Margins

Constitutes 40% of strain.

Global Composite 127.6

Volume-Weighted International Average

#1 Bottleneck: Jet Fuel Refining Margins

Constitutes 38% of strain.

View regional component points as a data table

Regional stress contribution breakdown table
Region	Total Stress	Primary Bottleneck	Fleet Groundings	Airspace Detours	Fuel Crack	ATC Delays	FX & Financial
South Asia	139.2	Engine Inspection Groundings (GTF)	+37.0 pts	+26.5 pts	+18.5 pts	+11.2 pts	+14.8 pts
Middle East	136.5	Airspace Closures & Warzone Detours	+12.5 pts	+41.8 pts	+16.2 pts	+9.8 pts	+22.0 pts
Africa	133.8	Fuel Import Logistics & FX Repatriation	+14.8 pts	+15.2 pts	+32.5 pts	+9.5 pts	+28.0 pts
Europe	130.4	Eurocontrol ATC Network Bottlenecks	+17.5 pts	+21.4 pts	+19.8 pts	+35.2 pts	+12.0 pts
South East Asia	124.0	LCC Engine Inspection Cycles	+22.4 pts	+9.8 pts	+18.5 pts	+8.5 pts	+15.2 pts
South West Pacific	119.5	Ultra-Long-Haul Fuel Sensitivity	+9.5 pts	+7.2 pts	+20.4 pts	+5.4 pts	+26.8 pts
Americas	118.6	USGC Jet Fuel Crack Margins	+11.8 pts	+6.2 pts	+28.5 pts	+12.4 pts	+19.2 pts
Global Composite	127.6	Jet Fuel Refining Margins	+6.8 pts	+3.2 pts	+10.5 pts	+4.5 pts	+2.6 pts

Component Breakdown Matrix

Composite = 100 + ∑(weight × stress score). Full derivation on the methodology tab.

API-INDEX component breakdown for the week of 2026-10-19
Indicator component	Current value	Baseline value	Stress score (0–100)	Weight	Index contribution	Source & freshness
Jet Fuel Crack Spread	91.38 $/bbl	15.00 $/bbl	100	25%	+25.00	Yahoo Finance (NYMEX HO vs ICE BZ) / EIA • Daily (automatic)
Commercial Fleet Grounding Ratio	13.54 %	5.00 %	66	20%	+13.14	OpenSky Network / Aviation Fleets • Weekly (automatic)
ATFM En-Route Delay Severity	2.13 min/flt	0.80 min/flt	49	15%	+7.39	Eurocontrol PRU / FAA NAS • Weekly (automatic)
Geopolitical Airspace Detour Overhead	4.81 %	4.00 %	6	15%	+0.87	OpenSky Flight Trajectories • Weekly (automatic)
Airline Equity Relative Stress	95.00 index	35.00 index	95	10%	+9.50	Yahoo Finance (NYSE JETS vs S&P 500) • Daily (automatic)
FX Purchasing Power Dislocation	37.90 index	30.00 index	38	10%	+3.79	Yahoo Finance (Forex EUR/USD, DXY) • Daily (automatic)
Network Flight Cancellation Rate	1.46 %	1.00 %	12	5%	+0.58	BTS / Eurocontrol • Weekly (automatic)

Discussion & Methodology Notes

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Mathematical Architecture & Methodology

The Airline Pressure Index (API-INDEX) is calibrated against historical operating equilibrium to measure multi-dimensional airline stress.

Composite Scoring Formula

API-INDEX = 100.0 + (∑ [ Weight_i × Stress_i ] − 38.0) × 1.35

Where each component stress score is normalized between 0.0 (calm equilibrium) and 100.0 (crisis cap). 100.0 represents the non-crisis operating baseline.

Component Weights & Crisis Caps

Component	Weight	Baseline	Crisis Cap	Source	Cap Rationale
Jet Fuel Crack Spread	25%	15.00 $/bbl	+200%	Yahoo Finance (NYMEX HO vs ICE BZ) / EIA	+200% ($45/bbl crack spread over Brent) represents peak refining margin dislocation, where jet fuel cost surges beyond standard airline fuel surcharge pass-through capacity.
Commercial Fleet Grounding Ratio	20%	5.00 %	+260%	OpenSky Network / Aviation Fleets	18% grounded fleet represents extreme supply chain paralysis, calibrated on peak Pratt & Whitney GTF powdered-metal inspection cycles and CFM engine shop-visit backlogs.
ATFM En-Route Delay Severity	15%	0.80 min/flt	+337%	Eurocontrol PRU / FAA NAS	3.5 minutes en-route delay per flight across the network triggers severe crew duty-time timeouts and cascading wave-connection failures across international hub airports.
Geopolitical Airspace Detour Overhead	15%	4.00 %	+350%	OpenSky Flight Trajectories	18% average route detour reflects full closure of major Eurasian, Middle East, and Red Sea airways, imposing massive extra flight duration and carbon penalties.
Airline Equity Relative Stress	10%	35.00 index	+150%	Yahoo Finance (NYSE JETS vs S&P 500)	Severe underperformance of the Global Aviation ETF against the S&P 500 signals heightened market perception of airline credit distress and margin deterioration.
FX Purchasing Power Dislocation	10%	30.00 index	+100%	Yahoo Finance (Forex EUR/USD, DXY)	USD strength severely inflates dollar-denominated aircraft lease and fuel obligations for international non-USD airlines whose revenues are generated in local currencies.
Network Flight Cancellation Rate	5%	1.00 %	+400%	BTS / Eurocontrol	5% system-wide flight cancellation rate represents catastrophic operational breakdown (severe weather ground stops, IT outages, or coordinated industrial strike action).