Pilot Tom D has visited (landed in) a total of 68 countries but have 172 countries yet to explore.
Afghanistan
Albania
Algeria
American Samoa
Angola
Anguilla
Antarctica
Antigua and Barbuda
Azerbaijan
Bahrain
Bangladesh
Barbados
Belarus
Bolivia
Bosnia and Herzegovina
Botswana
Brazil
British Indian Ocean Territory
British Virgin Islands
Brunei
Burkina Faso
Burundi
Cambodia
Cameroon
Cape Verde
Central African Republic
Chad
Chile
Christmas Island
Cocos (Keeling) Islands
Comoros
Congo
Congo (DRC)
Cook Islands
Cote D'Ivoire
Djibouti
Dominica
Dominican Republic
Ecuador
El Salvador
Equatorial Guinea
Eritrea
Estonia
Eswatini
Ethiopia
Falkland Islands
Faroe Islands
Fiji
French Guiana
French Polynesia
Gabon
Greenland
Grenada
Guadeloupe
Guam
Guinea
Guinea-Bissau
Guyana
Haiti
India
Johnston Atoll
Jordan
Kazakhstan
Kenya
Kiribati
Liberia
Libya
Libyan Arab Jamahiriya
Lithuania
Marshall Islands
Martinique
Mauritania
Mauritius
Mayotte
Micronesia
Midway Islands
Monaco
Mongolia
Montserrat
Morocco
Mozambique
New Caledonia
Nicaragua
Niger
Nigeria
Niue
Norfolk Island
North Macedonia
Northern Mariana Islands
Oman
Palau
Palestine
Papua New Guinea
Paraguay
Peru
Philippines
Puerto Rico
Qatar
Reunion
Romania
Russia
Rwanda
Saint Helena
Saint Kitts and Nevis
Saint Lucia
Saint Pierre and Miquelon
Saint Vincent and The Grenadines
Samoa
Sao Tome and Principe
Senegal
Seychelles
Sierra Leone
Singapore
Slovakia
Slovenia
Solomon Islands
Somalia
South Africa
South Sudan
Sri Lanka
Sudan
Suriname
Syria
Tajikistan
Tanzania
Thailand
Timor Leste
Timor-Leste
Togo
Tonga
Trinidad and Tobago
Turkmenistan
Turks and Caicos Islands
Tuvalu
Uganda
United Arab Emirates
Uruguay
Uzbekistan
Vanuatu
Venezuela
Vietnam
Virgin Islands, U.S.
Wake Island
Wallis and Futuna
Western Sahara
Yemen
Zambia
Zimbabwe