diff --git a/game/theater/theaterloader.py b/game/theater/theaterloader.py
index c86d48ec..c5584aa4 100644
--- a/game/theater/theaterloader.py
+++ b/game/theater/theaterloader.py
@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import datetime
+from collections.abc import Iterator
 from dataclasses import dataclass
 from pathlib import Path
 from typing import Any
@@ -57,9 +58,16 @@ class SeasonData:
 
 
 class TheaterLoader:
+    THEATER_RESOURCE_DIR = Path("resources/theaters")
+
     def __init__(self, name: str) -> None:
         self.name = name
-        self.descriptor_path = Path("resources/theaters") / self.name / "info.yaml"
+        self.descriptor_path = self.THEATER_RESOURCE_DIR / self.name / "info.yaml"
+
+    @classmethod
+    def each(cls) -> Iterator[ConflictTheater]:
+        for theater_dir in cls.THEATER_RESOURCE_DIR.iterdir():
+            yield TheaterLoader(theater_dir.name).load()
 
     def load(self) -> ConflictTheater:
         with self.descriptor_path.open() as descriptor_file:
diff --git a/resources/tools/datalint.py b/resources/tools/datalint.py
index e69de29b..fb8c4c92 100644
--- a/resources/tools/datalint.py
+++ b/resources/tools/datalint.py
@@ -0,0 +1,219 @@
+from __future__ import annotations
+
+import argparse
+import contextlib
+import logging
+import subprocess
+import sys
+import textwrap
+from abc import ABC, abstractmethod
+from collections.abc import Iterable, Iterator
+from datetime import date
+from pathlib import Path
+from typing import TextIO, TypeAlias
+
+from game import VERSION
+from game.airfields import AirfieldData
+from game.theater import ConflictTheater
+from game.theater.theaterloader import TheaterLoader
+
+
+class ReportElement(ABC):
+    @abstractmethod
+    def __str__(self) -> str:
+        ...
+
+
+class Heading(ReportElement):
+    def __init__(self, level: int, text: str) -> None:
+        self.level = level
+        self.text = text
+
+    def __str__(self) -> str:
+        return f"{'#' * self.level} {self.text}"
+
+
+class H1(Heading):
+    def __init__(self, text: str) -> None:
+        super().__init__(1, text)
+
+
+class H2(Heading):
+    def __init__(self, text: str) -> None:
+        super().__init__(2, text)
+
+
+class H3(Heading):
+    def __init__(self, text: str) -> None:
+        super().__init__(3, text)
+
+
+class Paragraph(ReportElement):
+    def __init__(self, text: str) -> None:
+        self.text = text
+
+    def __str__(self) -> str:
+        return textwrap.fill(self.text, width=80)
+
+
+class UnorderedList(ReportElement):
+    def __init__(self, items: Iterable[str]) -> None:
+        self.items = list(items)
+        if not self.items:
+            raise ValueError("List has no data")
+
+    def __str__(self) -> str:
+        return "\n".join(f"* {item}" for item in self.items)
+
+
+class Reporter:
+    def __init__(self, output: TextIO) -> None:
+        self.output = output
+
+    def write(self, element: ReportElement) -> None:
+        print(f"{element}\n", file=self.output)
+
+
+ReportStream: TypeAlias = Iterator[ReportElement]
+
+
+class LinterBase(ABC):
+    def stream_reports(self) -> ReportStream:
+        ...
+
+
+class AirfieldLinter(LinterBase):
+    def stream_reports(self) -> ReportStream:
+        yield H2("Airfield data")
+        yield Paragraph(
+            "This section lists airfields with missing data. Not all data is able to "
+            "be exported from DCS directly, and the data reported in this section must "
+            "be maintained by hand. For any airfield listed in this section, "
+            "Liberation will not be able to (not necessarily a complete list):"
+        )
+        yield UnorderedList(
+            [
+                "Include ATC, TACAN, or ILS information in the kneeboard",
+                "Configure preset radio channels for capable aircraft",
+            ]
+        )
+        for theater in TheaterLoader.each():
+            yield from self.document_airfields_with_missing_data(theater)
+            self.iter_airfields_with_no_data(theater)
+
+    def document_airfields_with_missing_data(
+        self, theater: ConflictTheater
+    ) -> ReportStream:
+        airfields = list(self.iter_airfields_with_no_data(theater))
+
+        yield H3(theater.terrain.name)
+        if not airfields:
+            yield Paragraph("No missing data.")
+            return
+
+        yield Paragraph("The following airfields are missing data:")
+        yield UnorderedList(airfields)
+
+    @staticmethod
+    def iter_airfields_with_no_data(theater: ConflictTheater) -> Iterator[str]:
+        for airfield in theater.terrain.airport_list():
+            try:
+                AirfieldData.for_airport(theater, airfield)
+            except KeyError:
+                yield airfield.name
+
+
+class UncheckedDataLinter(LinterBase):
+    def stream_reports(self) -> ReportStream:
+        yield H2("Unchecked data")
+        yield Paragraph("Any types of data not mentioned above are **not checked**.")
+
+
+class Linter(LinterBase):
+    def __init__(self, output: TextIO) -> None:
+        self.reporter = Reporter(output)
+
+    def run(self) -> None:
+        for report in self.stream_reports():
+            self.reporter.write(report)
+
+    def stream_reports(self) -> ReportStream:
+        yield H1("Liberation data report")
+        yield self.describe_version()
+        yield Paragraph(
+            "This report documents missing supplemental data in Liberation. This is "
+            "only able to report data that is missing as compared to pydcs. If pydcs "
+            "is missing DCS data, that cannot be reported."
+        )
+        yield Paragraph(
+            "**Accuracy of data cannot be verified by this report.** If data not "
+            "mentioned in this report is present but **wrong**, file a bug."
+        )
+        yield from AirfieldLinter().stream_reports()
+        yield from UncheckedDataLinter().stream_reports()
+
+    def describe_version(self) -> ReportElement:
+        sha = subprocess.run(
+            ["git", "rev-parse", "--short", "HEAD"],
+            check=True,
+            capture_output=True,
+            text=True,
+        ).stdout.strip()
+        return Paragraph(
+            f"This report was generated for DCS Liberation {VERSION} ({sha}) on "
+            f"{date.today()} with pydcs {self.describe_pydcs()}."
+        )
+
+    def describe_pydcs(self) -> str:
+        result = subprocess.run(
+            ["pip", "freeze"], check=True, capture_output=True, text=True
+        )
+        pydcs_lines = [l for l in result.stdout.splitlines() if "pydcs" in l]
+        if len(pydcs_lines) != 1:
+            raise RuntimeError(
+                "Could not find unique pydcs package in `pip freeze` output:\n"
+                f"{result.stdout}"
+            )
+        version = pydcs_lines[0]
+        if version.startswith("-e git+"):
+            return self.format_pip_git(version)
+        return version
+
+    @staticmethod
+    def format_pip_git(version: str) -> str:
+        _, _, version = version.partition("+")
+        if version.endswith("#egg=pydcs"):
+            version, _, _ = version.rpartition("#")
+        _, _, sha = version.partition("@")
+        return sha
+
+
+def parse_args() -> argparse.Namespace:
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument(
+        "output_path",
+        type=Path,
+        nargs="?",
+        help=(
+            "Write the report to the given path. If omitted, the report will be "
+            "written to stdout."
+        ),
+    )
+
+    return parser.parse_args()
+
+
+def main() -> None:
+    logging.basicConfig(level=logging.DEBUG)
+    args = parse_args()
+    if args.output_path is None:
+        context = contextlib.nullcontext(sys.stdout)
+    else:
+        context = args.output_path.open("w")
+    with context as output:
+        Linter(output).run()
+
+
+if __name__ == "__main__":
+    main()