@@ -25,7 +25,7 @@ For a high-level overview of the Arrow release process see the [Apache Arrow Rel
 ## Before the Arrow Release Candidate Is Created
 
 - [ ] [Create a GitHub issue](https://github.com/apache/arrow/issues/new/) entitled `[R] CRAN packaging checklist for version X.Y.Z` and copy this checklist to the issue.
-- [ ] Review deprecated functions to advance their deprecation status, including removing preprocessor directives that no longer apply (search for `ARROW_VERSION_MAJOR` in r/src).
+- [ ] Review deprecated functions to advance their deprecation status.
 - [ ] Evaluate the status of any failing [nightly tests and nightly packaging builds](http://crossbow.voltrondata.com). These checks replicate most of the checks that CRAN runs, so we need them all to be passing or to understand that the failures may (though won't necessarily) result in a rejection from CRAN.
 - [ ] Check [current CRAN check results](https://cran.rstudio.org/web/checks/check_results_arrow.html).
 - [ ] Ensure the contents of the README are accurate and up to date.
 
@@ -80,13 +80,8 @@ void DeletePointer(std::shared_ptr<T>* ptr) {
 template <typename T>
 using Pointer = cpp11::external_pointer<std::shared_ptr<T>, DeletePointer<T>>;
 
-#if ARROW_VERSION_MAJOR >= 18
 using ChunkResolver = arrow::ChunkResolver;
 using ChunkLocation = arrow::ChunkLocation;
-#else
-using ChunkResolver = arrow::internal::ChunkResolver;
-using ChunkLocation = arrow::internal::ChunkLocation;
-#endif
 
 class ArrowAltrepData {
  public:
 
@@ -100,11 +100,7 @@ std::string RExtensionType::ToString(bool show_metadata) const {
   // In the event of an error (e.g., we are not on the main thread
   // and we are not inside RunWithCapturedR()), just call the default method
   if (!result.ok()) {
-#if ARROW_VERSION_MAJOR >= 16
     return ExtensionType::ToString(show_metadata);
-#else
-    return ExtensionType::ToString();
-#endif
   } else {
     return result.ValueUnsafe();
   }
 
@@ -429,11 +429,7 @@ std::shared_ptr<fs::GcsFileSystem> fs___GcsFileSystem__Make(bool anonymous,
   }
 
   auto io_context = MainRThread::GetInstance().CancellableIOContext();
-#if ARROW_VERSION_MAJOR >= 18
   return ValueOrStop(fs::GcsFileSystem::Make(gcs_opts, io_context));
-#else
-  return fs::GcsFileSystem::Make(gcs_opts, io_context);
-#endif
 }
 
 // [[gcs::export]]
Original file line number	Diff line number	Diff line change
`@@ -429,11 +429,7 @@ std::shared_ptr<fs::GcsFileSystem> fs___GcsFileSystem__Make(bool anonymous,`
`429`	`429`	`}`
`430`	`430`
`431`	`431`	`auto io_context = MainRThread::GetInstance().CancellableIOContext();`
`432`		`-#if ARROW_VERSION_MAJOR >= 18`
`433`	`432`	`return ValueOrStop(fs::GcsFileSystem::Make(gcs_opts, io_context));`
`434`		`-#else`
`435`		`- return fs::GcsFileSystem::Make(gcs_opts, io_context);`
`436`		`-#endif`
`437`	`433`	`}`
`438`	`434`
`439`	`435`	`// [[gcs::export]]`