diff --git a/.github/workflows/historical-adsb.yaml b/.github/workflows/historical-adsb.yaml
new file mode 100644
index 0000000..db85e99
--- /dev/null
+++ b/.github/workflows/historical-adsb.yaml
@@ -0,0 +1,128 @@
+name: Historical ADS-B Processing
+
+on:
+  workflow_dispatch:
+    inputs:
+      start_date:
+        description: 'Start date (YYYY-MM-DD, inclusive)'
+        required: true
+        type: string
+      end_date:
+        description: 'End date (YYYY-MM-DD, inclusive)'
+        required: true
+        type: string
+      chunk_days:
+        description: 'Days per job chunk (default: 7)'
+        required: false
+        type: number
+        default: 7
+
+jobs:
+  generate-matrix:
+    runs-on: ubuntu-latest
+    outputs:
+      chunks: ${{ steps.generate.outputs.chunks }}
+      global_start: ${{ inputs.start_date }}
+      global_end: ${{ inputs.end_date }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+
+      - name: Generate date chunks
+        id: generate
+        env:
+          INPUT_START_DATE: ${{ inputs.start_date }}
+          INPUT_END_DATE: ${{ inputs.end_date }}
+          INPUT_CHUNK_DAYS: ${{ inputs.chunk_days }}
+        run: python src/adsb/historical_generate_matrix.py
+
+  process-chunk:
+    needs: generate-matrix
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        chunk: ${{ fromJson(needs.generate-matrix.outputs.chunks) }}
+      max-parallel: 3
+      fail-fast: false
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install polars pyarrow orjson zstandard
+
+      - name: Free disk space
+        run: |
+          sudo rm -rf /usr/share/dotnet
+          sudo rm -rf /opt/ghc
+          sudo rm -rf /usr/local/share/boost
+          df -h
+
+      - name: Process date range
+        env:
+          CHUNK_START_DATE: ${{ matrix.chunk.start_date }}
+          CHUNK_END_DATE: ${{ matrix.chunk.end_date }}
+        working-directory: src/adsb
+        run: python historical_process_chunk.py
+
+      - name: Upload chunk artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: chunk-${{ matrix.chunk.start_date }}-${{ matrix.chunk.end_date }}
+          path: data/chunks/*.csv
+          retention-days: 1
+          if-no-files-found: ignore
+
+  combine-chunks:
+    needs: [generate-matrix, process-chunk]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install polars
+
+      - name: Download all chunk artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: chunks
+          pattern: chunk-*
+          merge-multiple: true
+
+      - name: List downloaded chunks
+        run: |
+          echo "Downloaded chunks:"
+          find chunks -name "*.csv" -type f 2>/dev/null || echo "No CSV files found"
+
+      - name: Combine chunks
+        env:
+          GLOBAL_START_DATE: ${{ needs.generate-matrix.outputs.global_start }}
+          GLOBAL_END_DATE: ${{ needs.generate-matrix.outputs.global_end }}
+        run: python src/adsb/historical_combine_chunks.py
+
+      - name: Upload final artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: planequery_aircraft_adsb-${{ needs.generate-matrix.outputs.global_start }}-${{ needs.generate-matrix.outputs.global_end }}
+          path: data/planequery_aircraft/*.csv
+          retention-days: 30
diff --git a/src/adsb/historical_combine_chunks.py b/src/adsb/historical_combine_chunks.py
new file mode 100644
index 0000000..06ce5c6
--- /dev/null
+++ b/src/adsb/historical_combine_chunks.py
@@ -0,0 +1,85 @@
+#!/usr/bin/env python3
+"""Combine processed chunks into final historical ADS-B release."""
+
+import os
+import sys
+from pathlib import Path
+
+import polars as pl
+
+
+def combine_chunks(chunks_dir: Path, output_dir: Path, start_date: str, end_date: str) -> Path:
+    """Combine all chunk CSVs into final output.
+    
+    Args:
+        chunks_dir: Directory containing chunk CSV files
+        output_dir: Directory to write final output
+        start_date: Global start date for filename
+        end_date: Global end date for filename
+        
+    Returns:
+        Path to final output CSV
+    """
+    # Import here to allow script to be run from repo root
+    sys.path.insert(0, str(Path(__file__).parent))
+    from compress_adsb_to_aircraft_data import deduplicate_by_signature
+    
+    csv_files = sorted(chunks_dir.glob("**/*.csv"))
+    print(f"Found {len(csv_files)} chunk files")
+    
+    if not csv_files:
+        print("ERROR: No chunk files found", file=sys.stderr)
+        sys.exit(1)
+    
+    dfs: list[pl.DataFrame] = []
+    for csv_file in csv_files:
+        print(f"Loading {csv_file}")
+        df = pl.read_csv(csv_file, null_values=[""])
+        dfs.append(df)
+        print(f"  {df.height} rows")
+    
+    df_combined = pl.concat(dfs)
+    print(f"Combined: {df_combined.height} rows")
+    
+    df_combined = deduplicate_by_signature(df_combined)
+    print(f"After final dedup: {df_combined.height} rows")
+    
+    # Sort by time
+    if "time" in df_combined.columns:
+        df_combined = df_combined.sort("time")
+    
+    # Convert list columns to strings for CSV compatibility
+    for col in df_combined.columns:
+        if df_combined[col].dtype == pl.List:
+            df_combined = df_combined.with_columns(
+                pl.col(col).list.join(",").alias(col)
+            )
+    
+    # Write output
+    output_dir.mkdir(parents=True, exist_ok=True)
+    output_path = output_dir / f"planequery_aircraft_adsb_{start_date}_{end_date}.csv"
+    
+    df_combined.write_csv(output_path)
+    print(f"Wrote final output: {output_path}")
+    print(f"Total records: {df_combined.height}")
+    
+    return output_path
+
+
+def main() -> None:
+    """Main entry point for GitHub Actions."""
+    start_date = os.environ.get("GLOBAL_START_DATE")
+    end_date = os.environ.get("GLOBAL_END_DATE")
+    
+    if not start_date or not end_date:
+        print("ERROR: GLOBAL_START_DATE and GLOBAL_END_DATE must be set", file=sys.stderr)
+        sys.exit(1)
+    
+    chunks_dir = Path("chunks")
+    output_dir = Path("data/planequery_aircraft")
+    
+    combine_chunks(chunks_dir, output_dir, start_date, end_date)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/src/adsb/historical_generate_matrix.py b/src/adsb/historical_generate_matrix.py
new file mode 100644
index 0000000..3a687e5
--- /dev/null
+++ b/src/adsb/historical_generate_matrix.py
@@ -0,0 +1,62 @@
+#!/usr/bin/env python3
+"""Generate date chunk matrix for historical ADS-B processing."""
+
+import json
+import os
+import sys
+from datetime import datetime, timedelta
+
+
+def generate_chunks(start_date: str, end_date: str, chunk_days: int) -> list[dict]:
+    """Generate date chunks for parallel processing.
+    
+    Args:
+        start_date: Start date in YYYY-MM-DD format
+        end_date: End date in YYYY-MM-DD format
+        chunk_days: Number of days per chunk
+        
+    Returns:
+        List of chunk dictionaries with start_date and end_date
+    """
+    start = datetime.strptime(start_date, "%Y-%m-%d")
+    end = datetime.strptime(end_date, "%Y-%m-%d")
+    
+    chunks = []
+    current = start
+    
+    while current <= end:
+        chunk_end = min(current + timedelta(days=chunk_days - 1), end)
+        chunks.append({
+            "start_date": current.strftime("%Y-%m-%d"),
+            "end_date": chunk_end.strftime("%Y-%m-%d"),
+        })
+        current = chunk_end + timedelta(days=1)
+    
+    return chunks
+
+
+def main() -> None:
+    """Main entry point for GitHub Actions."""
+    start_date = os.environ.get("INPUT_START_DATE")
+    end_date = os.environ.get("INPUT_END_DATE")
+    chunk_days = int(os.environ.get("INPUT_CHUNK_DAYS", "7"))
+    
+    if not start_date or not end_date:
+        print("ERROR: INPUT_START_DATE and INPUT_END_DATE must be set", file=sys.stderr)
+        sys.exit(1)
+    
+    chunks = generate_chunks(start_date, end_date, chunk_days)
+    print(f"Generated {len(chunks)} chunks for {start_date} to {end_date}")
+    
+    # Write to GitHub Actions output
+    github_output = os.environ.get("GITHUB_OUTPUT")
+    if github_output:
+        with open(github_output, "a") as f:
+            f.write(f"chunks={json.dumps(chunks)}\n")
+    else:
+        # For local testing, just print
+        print(json.dumps(chunks, indent=2))
+
+
+if __name__ == "__main__":
+    main()
diff --git a/src/adsb/historical_process_chunk.py b/src/adsb/historical_process_chunk.py
new file mode 100644
index 0000000..f5dbe1e
--- /dev/null
+++ b/src/adsb/historical_process_chunk.py
@@ -0,0 +1,91 @@
+#!/usr/bin/env python3
+"""Process a single date chunk for historical ADS-B data."""
+
+import os
+import sys
+from datetime import datetime, timedelta
+from pathlib import Path
+
+# Add parent directory to path for imports when run from repo root
+sys.path.insert(0, str(Path(__file__).parent))
+
+
+def process_chunk(start_date: str, end_date: str, output_dir: Path) -> Path | None:
+    """Process a date range and output compressed CSV.
+    
+    Args:
+        start_date: Start date in YYYY-MM-DD format
+        end_date: End date in YYYY-MM-DD format
+        output_dir: Directory to write output CSV
+        
+    Returns:
+        Path to output CSV, or None if no data
+    """
+    from compress_adsb_to_aircraft_data import (
+        load_historical_for_day,
+        deduplicate_by_signature,
+    )
+    import polars as pl
+    
+    start = datetime.strptime(start_date, "%Y-%m-%d")
+    end = datetime.strptime(end_date, "%Y-%m-%d")
+    
+    total_days = (end - start).days + 1
+    print(f"Processing {total_days} days [{start_date}, {end_date}]")
+    
+    dfs: list[pl.DataFrame] = []
+    current_date = start
+    
+    while current_date <= end:
+        day_str = current_date.strftime("%Y-%m-%d")
+        print(f"  Loading {day_str}...")
+        
+        try:
+            df_compressed = load_historical_for_day(current_date)
+            if df_compressed.height > 0:
+                dfs.append(df_compressed)
+                total_rows = sum(df.height for df in dfs)
+                print(f"  +{df_compressed.height} rows (total: {total_rows})")
+        except Exception as e:
+            print(f"  Warning: Failed to load {day_str}: {e}")
+        
+        current_date += timedelta(days=1)
+    
+    if not dfs:
+        print("No data found for this chunk")
+        return None
+    
+    df_accumulated = pl.concat(dfs)
+    df_accumulated = deduplicate_by_signature(df_accumulated)
+    print(f"After dedup: {df_accumulated.height} rows")
+    
+    # Write output
+    output_dir.mkdir(parents=True, exist_ok=True)
+    output_path = output_dir / f"chunk_{start_date}_{end_date}.csv"
+    df_accumulated.write_csv(output_path)
+    print(f"Wrote {output_path}")
+    
+    return output_path
+
+
+def main() -> None:
+    """Main entry point for GitHub Actions."""
+    start_date = os.environ.get("CHUNK_START_DATE")
+    end_date = os.environ.get("CHUNK_END_DATE")
+    
+    if not start_date or not end_date:
+        print("ERROR: CHUNK_START_DATE and CHUNK_END_DATE must be set", file=sys.stderr)
+        sys.exit(1)
+    
+    # Output to repo root data/chunks (script runs from src/adsb)
+    repo_root = Path(__file__).parent.parent.parent
+    output_dir = repo_root / "data" / "chunks"
+    result = process_chunk(start_date, end_date, output_dir)
+    
+    if result is None:
+        print("No data produced for this chunk")
+        sys.exit(0)
+
+
+if __name__ == "__main__":
+    main()