diff --git a/lib/codec/plain.ts b/lib/codec/plain.ts
index cc191a17..22871e08 100644
--- a/lib/codec/plain.ts
+++ b/lib/codec/plain.ts
@@ -264,16 +264,17 @@ function decodeValues_FIXED_LEN_BYTE_ARRAY(
   opts: Options
 ) {
   let values = [];
-
-  if (!opts.typeLength) {
+  const typeLength =
+    opts.typeLength ?? (opts.column ? opts.column.typeLength : undefined);
+  if (!typeLength) {
     throw "missing option: typeLength (required for FIXED_LEN_BYTE_ARRAY)";
   }
 
   for (let i = 0; i < count; ++i) {
     values.push(
-      cursor.buffer.slice(cursor.offset, cursor.offset + opts.typeLength)
+      cursor.buffer.slice(cursor.offset, cursor.offset + typeLength)
     );
-    cursor.offset += opts.typeLength;
+    cursor.offset += typeLength;
   }
 
   return values;
diff --git a/test/reference-test/read-all.test.ts b/test/reference-test/read-all.test.ts
index ee33f46f..492e4055 100644
--- a/test/reference-test/read-all.test.ts
+++ b/test/reference-test/read-all.test.ts
@@ -24,8 +24,6 @@ const unsupported = [
   'delta_encoding_optional_column.parquet', // DELTA_BINARY_PACKED unsupported
   'delta_encoding_required_column.parquet', // DELTA_BINARY_PACKED unsupported
   'delta_length_byte_array.parquet', // ZSTD unsupported, DELTA_BINARY_PACKED unsupported
-  'float16_nonzeros_and_nans.parquet', // missing option: typeLength (required for FIXED_LEN_BYTE_ARRAY)
-  'float16_zeros_and_nans.parquet', // missing option: typeLength (required for FIXED_LEN_BYTE_ARRAY)
   'large_string_map.brotli.parquet', // BUG?
 ];