Nonstop flight route between Metlakatla, Annette Island, Alaska, United States and Tainan City, Taiwan, Republic of China:
Departure Airport:

Arrival Airport:

Distance from MTM to TNN:
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- About this route
- MTM Airport Information
- TNN Airport Information
- Facts about MTM
- Facts about TNN
- Map of Nearest Airports to MTM
- List of Nearest Airports to MTM
- Map of Furthest Airports from MTM
- List of Furthest Airports from MTM
- Map of Nearest Airports to TNN
- List of Nearest Airports to TNN
- Map of Furthest Airports from TNN
- List of Furthest Airports from TNN
About this route:
A direct, nonstop flight between Metlakatla Seaplane Base (MTM), Metlakatla, Annette Island, Alaska, United States and Tainan Airport (TNN), Tainan City, Taiwan, Republic of China would travel a Great Circle distance of 5,601 miles (or 9,014 kilometers).
A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the large distance between Metlakatla Seaplane Base and Tainan Airport, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between Metlakatla Seaplane Base and Tainan Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | MTM / PAMM |
Airport Name: | Metlakatla Seaplane Base |
Location: | Metlakatla, Annette Island, Alaska, United States |
GPS Coordinates: | 55°7'51"N by 131°34'41"W |
Area Served: | Metlakatla, Alaska |
Operator/Owner: | Alaska DOT&PF - Southeast Region |
Airport Type: | Public |
Elevation: | 0 feet (0 meters) |
# of Runways: | 2 |
View all routes: | Routes from MTM |
More Information: | MTM Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | TNN / RCNN |
Airport Names: |
|
Location: | Tainan City, Taiwan, Republic of China |
GPS Coordinates: | 22°57'1"N by 120°12'20"E |
Operator/Owner: | Civil Aeronautics Administration |
Airport Type: | Public |
Elevation: | 63 feet (19 meters) |
# of Runways: | 2 |
View all routes: | Routes from TNN |
More Information: | TNN Maps & Info |
Facts about Metlakatla Seaplane Base (MTM):
- The furthest airport from Metlakatla Seaplane Base (MTM) is Port Alfred Airport (AFD), which is located 10,621 miles (17,093 kilometers) away in Port Alfred, South Africa.
- Metlakatla Seaplane Base has two seaplane landing areas designated E/W and N/S, each measuring 5,000 by 5,000 feet.
- The closest airport to Metlakatla Seaplane Base (MTM) is Annette Island Airport (ANN), which is located only 6 miles (10 kilometers) S of MTM.
- Because of Metlakatla Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at Metlakatla Seaplane Base at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
- Metlakatla Seaplane Base (MTM) has 2 runways.
Facts about Tainan Airport (TNN):
- The furthest airport from Tainan Airport (TNN) is Dr. Luis María Argaña International Airport (ESG), which is nearly antipodal to Tainan Airport (meaning Tainan Airport is almost on the exact opposite side of the Earth from Dr. Luis María Argaña International Airport), and is located 12,355 miles (19,883 kilometers) away in Mariscal Estigarribia, Paraguay.
- Because of Tainan Airport's relatively low elevation of 63 feet, planes can take off or land at Tainan Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
- In addition to being known as "Tainan Airport", other names for TNN include "臺南航空站台南機場" and "Táinán HángkōngzhànTáinán Jīchǎng".
- The closest airport to Tainan Airport (TNN) is Kaohsiung International Airport (Kaohsiung Siaogang Airport) (KHH), which is located 27 miles (44 kilometers) SSE of TNN.
- Tainan Airport (TNN) has 2 runways.
- Because of the shared use with the Air Force, the airport terminal was built quite a distance away from the airfield.
- A number of US units have been stationed at Tainan Air Base, including the 868th Tactical Missile Squadron from 1958 to 1962, which operated MGM-1 Matadors, probably under the ultimate control of the United States Taiwan Defense Command.
- On 16 April 1977, a FEAT Douglas C-47A B-247 was damaged beyond economic repair in a landing accident.