Reference only; verify against the target FastGPT release and deployment documentation.
What This Category of Data Entails
Civil aviation airport policy and regulatory basis documents are primarily official documents released by civil aviation authorities, regional civil aviation administrations, and airport operating entities. They cover categories including operational safety regulations, fee management standards, passenger service specifications, emergency response plans, and more. Update cadence varies with policy adjustments: regular policies are updated quarterly or annually, while temporary notice documents are released alongside specific events. Most documents are in PDF format, with clear section titles, clause numbers, issue numbers, and effective dates. Some include complex process tables and parameter comparison tables, and a small number have digital signatures. Core fields include document name, issuing authority, scope of application, and specific clause content. Units involved include meters, passenger trips, hours, and other civil aviation operation-related standards.
Constraints for Document Parsing and Chunking
PDF files with digital signatures restrict access for standard parsing tools. Specialized parsing logic is required to fully extract valid content. The structure of complex tables and parameter comparison tables can be disrupted by fixed-length chunking. Row and column integrity must be preserved to ensure information accuracy during Q&A. Policy clauses are mostly coherent long texts. Splitting must avoid breaking a single clause into multiple independent chunks, which harms context coherence during Q&A. Metadata such as document issue numbers and effective dates must be bound to their corresponding clauses. Critical identifying information must not be lost during chunking. Large policy compilation documents have many pages. Sufficient time must be reserved during parsing to avoid task failure due to timeout interruptions.
Configuration Settings
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
chunkSize | 800–1200 characters | Most individual civil aviation policy clauses are 500–1000 characters long. This range avoids splitting a single clause while ensuring contextual relevance after chunking |
chunkSplitter | Split by paragraph + title | Civil aviation policy documents have clear section titles and paragraph divisions. Preserving structure ensures logical coherence during Q&A |
customPdfParse | Enabled | Supports parsing PDF files with digital signatures, and correctly extracts tables and long text content |
PARSE_FILE_TIMEOUT_SECONDS | 120–180 seconds | Large airport policy compilation documents have many pages and take longer to parse. This avoids task failure due to timeout |
UPLOAD_FILE_MAX_SIZE | 500 MB | Meets upload requirements for large files such as annual airport policy compilations |
Three Common Mistakes
- After uploading a civil aviation policy PDF with a digital signature, the parsed text content is empty or has missing fields: The
customPdfParseconfiguration is not enabled, so the reading restriction imposed by the digital signature cannot be bypassed, resulting in valid content not being extracted. - A file read error message appears when calling the parsing tool: The file mapping path between the locally deployed pdf-marker and FastGPT is not correctly configured, causing the tool to be unable to access the uploaded PDF file.
- Complex airport fee tables are split into scattered text chunks: The paragraph + title chunking rule is not set, and using only fixed-length splitting disrupts the complete structure of the table.
How to Verify Proper Configuration
- Upload a civil aviation policy PDF with a digital signature, check the parsed text content, and confirm there are no missing items, garbled characters, or lost fields.
- Upload a PDF of an airport operation manual containing complex process tables, verify that the parsed result retains the row and column structure of the table with no misalignment or merging errors.
- Check the parsing task run logs, confirm that the parsing time does not exceed the configured
PARSE_FILE_TIMEOUT_SECONDSrange, and there are no timeout errors. - Select a coherent section of policy clauses, check that the chunking result includes the entire clause in a single chunk, with no splitting.
The values provided are common starting points and should be measured against the reader's own samples.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-28.