Www Caac Gov Cn

CAAC Statistics Bulletins Access Skill

Fetches aviation statistical bulletins from the Civil Aviation Administration of China (CAAC) website at www.caac.gov.cn.

Overview

This skill provides access to CAAC's statistical publications including:

• Monthly Production Statistics (月度运输生产统计) - Monthly indicators of civil aviation production
• Annual Development Reports (年度民航发展报告) - Comprehensive yearly development statistics
• Annual Airport Production Bulletins (年度机场生产公报) - Yearly airport throughput statistics

All documents are published as PDF or Excel attachments on individual bulletin pages.

Available Functions

1. list_bulletins

List available bulletins by category.

Parameters:

• category (optional, default: "monthly_production")

Categories:

• monthly_production - Monthly transport production statistics
• annual_development - Annual civil aviation development reports
• annual_airport - Annual airport production bulletins

Returns:

• List of bulletins with titles, URLs, and publication dates
• Most recent bulletins appear first (up to 50)

Example:

{
  "function": "list_bulletins",
  "category": "annual_airport"
}

2. get_bulletin

Get details of a specific bulletin including metadata and attachment URLs.

Parameters:

• url (required) - URL of the bulletin page

Returns:

• Title and metadata (publication date, source, etc.)
• List of attachments (PDFs, Excel files) with download URLs
• Content preview

Example:

{
  "function": "get_bulletin",
  "url": "https://www.caac.gov.cn/XXGK/XXGK/TJSJ/202503/t20250314_226932.html"
}

3. download_attachment

Download a file attachment and return as base64.

Parameters:

• url (required) - URL of the file to download
• max_size_mb (optional, default: 10) - Maximum file size limit

Returns:

• File content as base64-encoded string
• Filename and content type
• File size information

Example:

{
  "function": "download_attachment",
  "url": "https://www.caac.gov.cn/XXGK/XXGK/TJSJ/202503/P020250314353469776556.pdf",
  "max_size_mb": 20
}

4. search_bulletins

Search for bulletins by keywords and/or year across all categories.

Parameters:

• keywords (optional) - Keywords to search (matched against title)
• year (optional) - Year to filter by

Returns:

• Matching bulletins from all categories
• Up to 50 results

Example:

{
  "function": "search_bulletins",
  "year": "2024"
}

Data Structure

Sample Documents

Monthly Production Statistics

• 中国民航2026年4月份主要生产指标统计 (April 2026)
• Contains passenger traffic, cargo volume, flight operations

Annual Development Reports

• 2025年民航行业发展统计公报 (FY2025 report)
• Comprehensive industry statistics and analysis

Annual Airport Production Bulletins

• 2024年全国民用运输机场生产统计公报
• Includes passenger throughput rankings (Excel attachment)
• Airport operations data and trends

Notes

• All documents are in Chinese
• PDFs contain the main statistical report
• Excel files provide detailed data tables (e.g., airport rankings)
• Bulletins are typically published with a few months delay
• Historical data goes back to 2006 for airport production stats

Technical Details

• Uses direct HTTP requests (no JavaScript rendering needed)
• PDF/Excel files downloaded as binary content
• All content accessed through official CAAC website
• No authentication required