# AircraftCompare.online — Full LLM Context & Aeronautical Telemetry Specification

> Comprehensive technical documentation, route index, mathematical formulations, and structured schema reference for AircraftCompare.online. Maintained by the Aeronautical Performance & Flight Telemetry Desk.

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## 1. Site Overview & Institutional Attribution

- **Canonical Domain**: `https://aircraftcompare.online`
- **Institutional Research Desk**: Aeronautical Performance & Flight Telemetry Desk
- **Primary Data Standards**:
  - FAA 14 CFR Part 25 Type Certificate Data Sheets (TCDS) & Airport Planning Manuals (ACAP)
  - EASA CS-25 Certification Specifications for Large Aeroplanes
  - ICAO Doc 8643 Aircraft Type Designators & Wake Turbulence Categories (Light, Medium, Heavy, Super)
  - FAA AC 150/5300-13B Airport Design Groups (ADG I through VI)
  - ICAO Annex 3 / WMO No. 306 FM 15-XV (METAR) & FM 51-XV (TAF) Aeronautical Meteorology Codes
- **Total Indexed Routes**: 72 static routes (12 Core Tools, Hubs & Governance pages + 60 Head-to-Head Aircraft Comparison Dossiers)
- **Certified Airframe Database**: 154 commercial, regional, turboprop, executive, and cargo aircraft models (`src/data/aircraftDatabase.ts`)

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## 2. Core Mathematical & Engineering Models

### 2.1 Breguet Range Equation (Jet Propulsion)
$$R = \frac{V}{c_T \cdot g} \cdot \frac{L}{D} \cdot \ln\left(\frac{W_i}{W_f}\right)$$
- $R$: Still-air nautical mile range (NM)
- $V$: True airspeed at cruise Mach number (knots)
- $c_T$: Thrust Specific Fuel Consumption (TSFC, $\text{lb}/(\text{lbf}\cdot\text{hr})$)
- $L/D$: Aerodynamic Lift-to-Drag ratio at cruise altitude
- $W_i / W_f$: Initial cruise gross weight to final weight ratio

### 2.2 Sea-Level Static Thrust-to-Weight Ratio ($T/W$)
$$\frac{T}{W} = \frac{N_{\text{eng}} \cdot T_{\text{SLS, per engine}}}{\text{MTOW}_{\text{lbf}}}$$
- Governs second-segment OEI (One Engine Inoperative) climb gradients under 14 CFR § 25.121 and obstacle-limited runway performance.

### 2.3 Density Altitude & ISA Deviation
$$P_{\text{alt}} = \text{Elevation}_{\text{ft}} + (1013.25 - \text{QNH}_{\text{hPa}}) \times 30$$
$$T_{\text{ISA}} = 15^\circ\text{C} - \left(1.98^\circ\text{C} \times \frac{\text{Elevation}_{\text{ft}}}{1000}\right)$$
$$\text{DA} = P_{\text{alt}} + 118.8 \times (\text{OAT}^\circ\text{C} - T_{\text{ISA}})$$

### 2.4 Runway Crosswind & Headwind Vector Decomposition
$$V_{\text{crosswind}} = V_{\text{wind}} \cdot |\sin(\theta_{\text{wind}} - \theta_{\text{rwy}})|$$
$$V_{\text{headwind}} = V_{\text{wind}} \cdot \cos(\theta_{\text{wind}} - \theta_{\text{rwy}})$$

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## 3. Complete Route Directory (72 Pages)

### 3.1 Interactive Workbenches & OEM Fleet Hubs (6 Pages)
- `https://aircraftcompare.online/` — Side-by-Side Aircraft Telemetry Workbench, Breguet Payload-Range Comparator, Scale Silhouette Overlay & Weather Utilities
- `https://aircraftcompare.online/size-comparison/` — Interactive Aircraft Fuselage, Wingspan & Tail Height SVG Scale Overlay
- `https://aircraftcompare.online/airbus/` — Airbus Commercial Fleet Specification & Mission Calculator Hub (A220, A320neo, A330neo, A350 XWB, A380)
- `https://aircraftcompare.online/boeing/` — Boeing Commercial Airplanes Specification & Mission Calculator Hub (737 MAX, 767, 777, 777X, 787, 747-8)
- `https://aircraftcompare.online/taf/` — Interactive TAF Terminal Aerodrome Forecast Decoder & ICAO Change Group Timeline
- `https://aircraftcompare.online/metar/` — Interactive METAR Decoder, Density Altitude & Crosswind Limit Calculator

### 3.2 Governance, Methodology & Discovery (6 Pages)
- `https://aircraftcompare.online/methodology/` — Aeronautical Telemetry & Atmospheric Modeling Methodology
- `https://aircraftcompare.online/editorial-policy/` — Institutional Editorial Policy, Verification Protocol & Safe Harbor Disclaimers
- `https://aircraftcompare.online/about/` — About the Aeronautical Performance & Flight Telemetry Desk
- `https://aircraftcompare.online/sitemap/` — Interactive HTML Sitemap & Category Index
- `https://aircraftcompare.online/privacy-policy/` — Privacy Policy & Zero-PII Client-Side Telemetry Architecture
- `https://aircraftcompare.online/terms-of-service/` — Terms of Service & Statutory Operational Disclaimers

### 3.3 Widebody & Transoceanic Aircraft Showdowns (29 Pages)
- `https://aircraftcompare.online/compare/boeing-777-300er-vs-boeing-787-9/` — Boeing 777-300ER vs Boeing 787-9
- `https://aircraftcompare.online/compare/airbus-a380-800-vs-boeing-747-8i/` — Airbus A380-800 vs Boeing 747-8I
- `https://aircraftcompare.online/compare/airbus-a350-900-vs-boeing-777-300er/` — Airbus A350-900 vs Boeing 777-300ER
- `https://aircraftcompare.online/compare/airbus-a350-1000-vs-boeing-777-300er/` — Airbus A350-1000 vs Boeing 777-300ER
- `https://aircraftcompare.online/compare/boeing-787-8-vs-airbus-a330-200/` — Boeing 787-8 vs Airbus A330-200
- `https://aircraftcompare.online/compare/boeing-787-9-vs-airbus-a350-900/` — Boeing 787-9 vs Airbus A350-900
- `https://aircraftcompare.online/compare/boeing-777-200er-vs-airbus-a330-300/` — Boeing 777-200ER vs Airbus A330-300
- `https://aircraftcompare.online/compare/airbus-a330-300-vs-boeing-777-200er/` — Airbus A330-300 vs Boeing 777-200ER
- `https://aircraftcompare.online/compare/boeing-767-300er-vs-airbus-a330-200/` — Boeing 767-300ER vs Airbus A330-200
- `https://aircraftcompare.online/compare/airbus-a330-900neo-vs-airbus-a350-900/` — Airbus A330-900neo vs Airbus A350-900
- `https://aircraftcompare.online/compare/airbus-a350-1000-vs-boeing-777-9/` — Airbus A350-1000 vs Boeing 777-9
- `https://aircraftcompare.online/compare/boeing-787-8-vs-boeing-787-9/` — Boeing 787-8 vs Boeing 787-9
- `https://aircraftcompare.online/compare/boeing-787-9-vs-boeing-787-10/` — Boeing 787-9 vs Boeing 787-10
- `https://aircraftcompare.online/compare/airbus-a350-900-vs-airbus-a350-1000/` — Airbus A350-900 vs Airbus A350-1000
- `https://aircraftcompare.online/compare/airbus-a330-800neo-vs-airbus-a330-900neo/` — Airbus A330-800neo vs Airbus A330-900neo
- `https://aircraftcompare.online/compare/boeing-777-200lr-vs-airbus-a340-500/` — Boeing 777-200LR vs Airbus A340-500
- `https://aircraftcompare.online/compare/boeing-747-400-vs-airbus-a380-800/` — Boeing 747-400 vs Airbus A380-800
- `https://aircraftcompare.online/compare/boeing-787-10-vs-airbus-a350-900/` — Boeing 787-10 vs Airbus A350-900
- `https://aircraftcompare.online/compare/airbus-a340-600-vs-boeing-777-300/` — Airbus A340-600 vs Boeing 777-300
- `https://aircraftcompare.online/compare/boeing-777-8-vs-boeing-777-9/` — Boeing 777-8 vs Boeing 777-9
- `https://aircraftcompare.online/compare/airbus-a330-200-vs-airbus-a330-300/` — Airbus A330-200 vs Airbus A330-300
- `https://aircraftcompare.online/compare/airbus-a340-200-vs-airbus-a340-300/` — Airbus A340-200 vs Airbus A340-300
- `https://aircraftcompare.online/compare/airbus-a340-300-vs-airbus-a340-600/` — Airbus A340-300 vs Airbus A340-600
- `https://aircraftcompare.online/compare/boeing-767-200-vs-boeing-767-300/` — Boeing 767-200 vs Boeing 767-300
- `https://aircraftcompare.online/compare/boeing-767-300-vs-boeing-767-400er/` — Boeing 767-300 vs Boeing 767-400ER
- `https://aircraftcompare.online/compare/airbus-a300-600-vs-boeing-767-200er/` — Airbus A300-600 vs Boeing 767-200ER
- `https://aircraftcompare.online/compare/airbus-a310-300-vs-boeing-767-200/` — Airbus A310-300 vs Boeing 767-200
- `https://aircraftcompare.online/compare/boeing-747-100-vs-boeing-747-8i/` — Boeing 747-100 vs Boeing 747-8I
- `https://aircraftcompare.online/compare/boeing-707-120-vs-boeing-707-320b/` — Boeing 707-120 vs Boeing 707-320B

### 3.4 Single-Aisle & Narrowbody Aircraft Showdowns (19 Pages)
- `https://aircraftcompare.online/compare/airbus-a321neo-vs-boeing-737-max-9/` — Airbus A321neo vs Boeing 737 MAX 9
- `https://aircraftcompare.online/compare/airbus-a320neo-vs-boeing-737-max-8/` — Airbus A320neo vs Boeing 737 MAX 8
- `https://aircraftcompare.online/compare/boeing-737-max-8-vs-boeing-737-800/` — Boeing 737 MAX 8 vs Boeing 737-800
- `https://aircraftcompare.online/compare/boeing-757-200-vs-boeing-737-900er/` — Boeing 757-200 vs Boeing 737-900ER
- `https://aircraftcompare.online/compare/airbus-a321lr-vs-boeing-757-200/` — Airbus A321LR vs Boeing 757-200
- `https://aircraftcompare.online/compare/airbus-a321xlr-vs-boeing-757-200/` — Airbus A321XLR vs Boeing 757-200
- `https://aircraftcompare.online/compare/airbus-a319neo-vs-boeing-737-max-7/` — Airbus A319neo vs Boeing 737 MAX 7
- `https://aircraftcompare.online/compare/airbus-a320-200-vs-boeing-737-800/` — Airbus A320-200 vs Boeing 737-800
- `https://aircraftcompare.online/compare/airbus-a321-200-vs-boeing-737-900er/` — Airbus A321-200 vs Boeing 737-900ER
- `https://aircraftcompare.online/compare/airbus-a318-vs-boeing-737-600/` — Airbus A318 vs Boeing 737-600
- `https://aircraftcompare.online/compare/airbus-a320neo-vs-airbus-a321neo/` — Airbus A320neo vs Airbus A321neo
- `https://aircraftcompare.online/compare/boeing-737-max-7-vs-boeing-737-max-8/` — Boeing 737 MAX 7 vs Boeing 737 MAX 8
- `https://aircraftcompare.online/compare/boeing-737-max-8-vs-boeing-737-max-9/` — Boeing 737 MAX 8 vs Boeing 737 MAX 9
- `https://aircraftcompare.online/compare/boeing-737-max-9-vs-boeing-737-max-10/` — Boeing 737 MAX 9 vs Boeing 737 MAX 10
- `https://aircraftcompare.online/compare/boeing-737-700-vs-airbus-a319-100/` — Boeing 737-700 vs Airbus A319-100
- `https://aircraftcompare.online/compare/comac-c919-vs-airbus-a320neo/` — COMAC C919 vs Airbus A320neo
- `https://aircraftcompare.online/compare/comac-c919-vs-boeing-737-max-8/` — COMAC C919 vs Boeing 737 MAX 8
- `https://aircraftcompare.online/compare/airbus-a220-300-vs-boeing-737-max-7/` — Airbus A220-300 vs Boeing 737 MAX 7
- `https://aircraftcompare.online/compare/airbus-a319neo-vs-airbus-a220-300/` — Airbus A319neo vs Airbus A220-300

### 3.5 Regional Jets & E-Jet Showdowns (12 Pages)
- `https://aircraftcompare.online/compare/airbus-a220-300-vs-embraer-e195-e2/` — Airbus A220-300 vs Embraer E195-E2
- `https://aircraftcompare.online/compare/airbus-a220-100-vs-embraer-e190-e2/` — Airbus A220-100 vs Embraer E190-E2
- `https://aircraftcompare.online/compare/embraer-e190-e2-vs-airbus-a220-100/` — Embraer E190-E2 vs Airbus A220-100
- `https://aircraftcompare.online/compare/embraer-e195-e2-vs-airbus-a220-100/` — Embraer E195-E2 vs Airbus A220-100
- `https://aircraftcompare.online/compare/embraer-e175-vs-bombardier-crj900/` — Embraer E175 vs Bombardier CRJ900
- `https://aircraftcompare.online/compare/embraer-175-vs-bombardier-crj900/` — Embraer 175 vs Bombardier CRJ900
- `https://aircraftcompare.online/compare/bombardier-crj900-vs-embraer-e175/` — Bombardier CRJ900 vs Embraer E175
- `https://aircraftcompare.online/compare/bombardier-crj700-vs-embraer-e170/` — Bombardier CRJ700 vs Embraer E170
- `https://aircraftcompare.online/compare/bombardier-crj700-vs-embraer-170/` — Bombardier CRJ700 vs Embraer 170
- `https://aircraftcompare.online/compare/embraer-e170-vs-embraer-e175/` — Embraer E170 vs Embraer E175
- `https://aircraftcompare.online/compare/embraer-e190-vs-embraer-e195/` — Embraer E190 vs Embraer E195
- `https://aircraftcompare.online/compare/bombardier-crj700-vs-bombardier-crj900/` — Bombardier CRJ700 vs Bombardier CRJ900

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## 4. Data Schema (`AircraftModel` TypeScript Interface)

```typescript
export interface AircraftModel {
  id: string;                 // Unique slug identifier (e.g. "airbus-a350-900")
  name: string;               // Full model designation ("Airbus A350-900")
  manufacturer: string;       // OEM ("Airbus", "Boeing", "Embraer", "Bombardier", etc.)
  family: string;             // Product family ("A350 XWB", "787 Dreamliner", etc.)
  category: string;           // "Widebody" | "Narrowbody" | "Regional" | "Turboprop" | "Business Jet" | "Cargo"
  icaoCode: string;           // 4-character ICAO Doc 8643 designator (e.g. "A359", "B789")
  wakeCategory: string;       // "L" | "M" | "H" | "J" (Super)
  adgGroup: string;           // FAA Airplane Design Group ("I" through "VI")
  wingspanM: number;          // Wingspan in meters
  lengthM: number;            // Overall fuselage length in meters
  heightM: number;            // Tail height in meters
  mtowKg: number;             // Maximum Take-Off Weight in kilograms
  oewKg: number;              // Operating Empty Weight in kilograms
  maxPayloadKg: number;       // Maximum Structural Payload in kilograms
  fuelCapacityL: number;      // Usable fuel volume in liters
  rangeNm: number;            // Design still-air range in Nautical Miles
  cruiseMach: number;         // Typical long-range cruise Mach number
  serviceCeilingFt: number;   // Certified maximum operating altitude in feet
  toflM: number;              // Sea-level ISA Take-Off Field Length at MTOW in meters
  seatsTypical: number;       // Standard 2/3-class airline cabin seating capacity
  seatsMax: number;           // Type-certificate exit-limit maximum seating capacity
  engineModel: string;        // Primary turbofan/turboprop powerplant options
  engineCount: number;        // Number of engines (2 or 4)
  thrustPerEngineLbf: number; // Sea-level static takeoff thrust per engine (lbf)
  cabinWidthM: number;        // Internal cabin width at armrest level (m)
}
```

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## 5. Statutory Safe Harbor Notice

Notice: This calculation engine models published statutory formulas and regulatory codes for informational and planning purposes only. It does not provide certified legal, medical, veterinary, tax, or engineering advice. Operational flight dispatch, weight-and-balance, and weather minima decisions must exclusively use FAA/EASA-approved Aircraft Flight Manuals (AFM), Flight Crew Operating Manuals (FCOM), and official aviation meteorological briefings.