| Advanced Helicopters Concepts | (301) 694-5313 | 330 Aviation Way, Frederick, MD |
| Advantage Aero Inc | (717) 569-4775 | 500 Airport Rd # R, Lititz, PA |
| Agrotors Inc | (717) 334-6777 | 1750 Emmitsburg Rd, Gettysburg, PA |
| Air Repair Co | (410) 822-2999 | 29137 Newman Rd # 8, Easton, MD |
| Airpark Sales & Svc Inc | (301) 373-2101 | 44174 Airport Rd # 300, California, MD |
| Am Av Inc | (410) 391-1738 | 701 Wilson Point Rd, Baltimore, MD |
| Amav | (410) 391-1738 | 400 Golden Oak Ct, Bel Air, MD |
| American Flight | (410) 757-6329 | 1974 Baltimore Annapolis Blvd, Annapolis, MD |
| Amp-Air Inc | (410) 221-0414 | 5227 Bucktown Rd, Cambridge, MD |
| Arnold Palmer Enterprises | (724) 537-7751 | Arnold Palmer Dr Old Rt 30, Latrobe, PA |
| Atc Flight Training Ctr | (301) 248-1480 | 10300 Glen Way, Fort Washington, MD |
| Aviation Group | (301) 676-0711 | 330 Aviation Way, Frederick, MD |
| Avitat-Vee Neal Aviation | (724) 539-4533 | 200 Pleasant Unity Rd # 109, Latrobe, PA |
| Bax Global Inc | (410) 859-5275 | Bwi Cargo Complex Bldg E # 47, Baltimore, MD |
| Bay Land Aviation Inc | (410) 749-0323 | 5279 Airport Rd, Salisbury, MD |
| Brett Aviation | (410) 391-0210 | 701 Wilson Point Rd # 18, Baltimore, MD |
| Butterfly Aeronautics | (301) 776-8588 | 8301 Ashford Blvd, Laurel, MD |
| Capitol Air Inc | (703) 451-6078 | 7220 Telegraph Square Dr, Lorton, VA |
| Civil Air Patrol Maryland Wing | (410) 863-0600 | 7427 Zachary Ln, Glen Burnie, MD |
| Congressional Air Charters Inc | (301) 840-0880 | 7940 Airpark Rd, Gaithersburg, MD |
| Contrail Aviation Inc | (410) 666-6123 | 28 Club View Ln, Phoenix, MD |
| Cort & Assoc Inc | (301) 299-0005 | 10211 River Rd, Potomac, MD |
| Cvc Helicopters | (410) 836-3882 | 4104 Conowingo Rd, Darlington, MD |
| Dentair | (410) 956-0047 | 6 Romar Dr, Annapolis, MD |
| Dutch County Helicopters | (717) 735-2208 | 500 Airport Rd, Lititz, PA |
| Eagle Air Inc | (301) 797-2288 | 18539 Henson Blvd, Hagerstown, MD |
| East Coast Flight Svc | (410) 820-6633 | 29111 Newman Rd, Easton, MD |
| East Coast Helicopter Inc | (717) 337-1515 | 2812 Emmitsburg Rd, Gettysburg, PA |
| Easton Aviation | (410) 822-8181 | 29137 Newman Rd # 5, Easton, MD |
| Executive Jet Aviation | (703) 996-8899 | 23411 Autopilot Dr, Sterling, VA |
| Extraordinaire Inc | (703) 996-1200 | 151 Departures Rd, Dulles, VA |
| Fetter Aviation | (301) 297-7388 | 10399 Piscataway Rd, Clinton, MD |
| Flying Tigers Inc | (717) 653-8181 | 186 Airport Rd, Marietta, PA |
| Freeland Leasing Corp | (410) 343-1295 | 3521 Baker School House Rd, Freeland, MD |
| Glenwood Aviation Llc | (410) 442-2643 | 7501 General Aviation Dr # 85, Fort George Meade, MD |
| Grant County Airport | (304) 257-4435 | Johnson Run Rd, Petersburg, WV |
| Haverfield Corp | (717) 642-9890 | 104 Sanders Rd, Fairfield, PA |
| Helicopter High Inc | (410) 391-9650 | 701 Wilson Point Rd # 409, Baltimore, MD |
| Helicopter Transport Svc | (410) 391-7722 | 701 Wilson Point Rd, Baltimore, MD |
| Helicopters Aviation Svc | (724) 887-4410 | 226 Airport Rd, Mount Pleasant, PA |
| Henry Weber Aircraft Distrs | (717) 569-2691 | 500 Airport Rd # B, Lititz, PA |
| Hinson Corporate Flight Svc | (410) 296-1526 | 901 Dulaney Valley Rd # 610, Baltimore, MD |
| Hinson Corproate Flight Svc | (410) 694-0585 | 3 Aaronson Dr, Glen Burnie, MD |
| Hoffman Aviation | (814) 445-3043 | Rr 1, Friedens, PA |
| Hunteman S Leigh | (410) 221-0329 | 5333 Cordtown Rd, Cambridge, MD |
| International Jet Mgmt | (703) 996-0600 | 23950 Wind Sock Dr # 1600, Sterling, VA |
| J & S Svc Inc | (410) 305-0975 | 81 General Aviation Dr, Fort George Meade, MD |
| Jet Stream Aircraft | (703) 406-3800 | 22070 Broderick Dr, Sterling, VA |
| L J Assoc Inc | (724) 537-0520 | 200 Pleasant Unity Rd # 112, Latrobe, PA |
| Lakeside Aviation Air Charter | (301) 746-6140 | Garrett County Airport, Accident, MD |
| Leisure Air | (703) 356-5515 | 1443 Emerson Ave, McLean, VA |
| Liberty Air Mgmt | (301) 694-9444 | 330 Aviation Way # G, Frederick, MD |
| Majestic Air Svc | (301) 695-8155 | 330 Aviation Way, Frederick, MD |
| Maryland Airlines | (410) 822-0400 | 29137 Newman Rd # 9, Easton, MD |
| Montgomery Aviation | (301) 977-5200 | 7920 Airpark Rd, Gaithersburg, MD |
| Penn-Air Inc | (814) 793-2164 | 3 Airport Dr, Martinsburg, PA |
| Phoenix Aviation Svc | (410) 465-8655 | 10029 Century Dr, Ellicott City, MD |
| Piedmont Hawthorne | (703) 661-0150 | 23411 Autopilot Dr, Sterling, VA |
| Raintree Aero | (410) 398-0234 | 166 Raintree Ln, Elkton, MD |
| Ram Aviation | (540) 788-4637 | Patrick Henry Airport, Calverton, VA |
| Scarborough Aviation | (301) 657-9600 | 4800 Hampden Ln, Bethesda, MD |
| Skybird Aviation | (410) 531-3233 | 4994 Sheppard Ln, Ellicott City, MD |
| Southern Pennsylvania Svc Co | (717) 334-0280 | 2812 Emmitsburg Rd, Gettysburg, PA |
| Travers, Guy C - R L Travers & Assoc | (703) 550-8811 | 8253 Backlick Rd # K, Lorton, VA |
| Tri-County Helicopters | (717) 653-6436 | 3536 Echo Valley Rd, Mount Joy, PA |
| Vista Grande Helicopters Inc | (724) 626-8378 | 2351c Memorial Blvd, Connellsville, PA |
| Warrenton-Fauquier Airport | (540) 788-4061 | 5075 Airport Rd, Midland, VA |
| White Hawk Aviation | (540) 727-8400 | 12517 Beverly Ford Rd, Brandy Station, VA |