Oak Grove Farm Airport (Federalsburg, MD) 5MD4 备注
| A110-3 | Runway 33 +40 ft plines at threshold. |
| A110-2 | For clearance contact patuxent approach at 301-342-3740, when patuxent approach is closed contact potomac approach at 866-640-4124. |
| A110-1 | Prior permission required bfr ldng, as runway may be unusable during and after hvy rainfall. |
