{
  "title": "Los Angeles Sectional \u2014 Southern California coastal excerpt",
  "publisher": "Federal Aviation Administration",
  "edition_effective": "2026-09-03",
  "next_edition": "2026-10-29",
  "source_url": "https://aeronav.faa.gov/visual/09-03-2026/sectional-files/Los_Angeles.zip",
  "catalog_url": "https://www.faa.gov/air_traffic/flight_info/aeronav/digital_products/vfr/",
  "original_dimensions": [
    16645,
    12349
  ],
  "source_crop_pixels": [
    7200,
    6300,
    12000,
    9900
  ],
  "excerpt_dimensions": [
    4800,
    3600
  ],
  "tiles": [
    "la-0-0.webp",
    "la-1-0.webp",
    "la-2-0.webp",
    "la-3-0.webp",
    "la-0-1.webp",
    "la-1-1.webp",
    "la-2-1.webp",
    "la-3-1.webp",
    "la-0-2.webp",
    "la-1-2.webp",
    "la-2-2.webp",
    "la-3-2.webp"
  ],
  "processing": "Pixel-aligned crop and lossless WebP tiling; original chart content preserved.",
  "model_note": "3D terrain and airspace geometry are simplified teaching approximations aligned to landmarks in this excerpt."
}