Nonstop flight route between Los Negros Island, Admiralty Islands, Papua New Guinea and Atwater, California, United States:
Departure Airport:

Arrival Airport:

Distance from MAS to MER:
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- About this route
- MAS Airport Information
- MER Airport Information
- Facts about MAS
- Facts about MER
- Map of Nearest Airports to MAS
- List of Nearest Airports to MAS
- Map of Furthest Airports from MAS
- List of Furthest Airports from MAS
- Map of Nearest Airports to MER
- List of Nearest Airports to MER
- Map of Furthest Airports from MER
- List of Furthest Airports from MER
About this route:
A direct, nonstop flight between Momote Airport (MAS), Los Negros Island, Admiralty Islands, Papua New Guinea and Castle Airport (MER), Atwater, California, United States would travel a Great Circle distance of 6,415 miles (or 10,324 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 Momote Airport and Castle 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 Momote Airport and Castle Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | MAS / AYMO |
Airport Name: | Momote Airport |
Location: | Los Negros Island, Admiralty Islands, Papua New Guinea |
GPS Coordinates: | 2°3'42"S by 147°25'27"E |
Area Served: | Lorengau, Manus Province |
Operator/Owner: | PNG National Airports Corporation Limited |
Airport Type: | Public |
Elevation: | 12 feet (4 meters) |
# of Runways: | 1 |
View all routes: | Routes from MAS |
More Information: | MAS Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | MER / KMER |
Airport Name: | Castle Airport |
Location: | Atwater, California, United States |
GPS Coordinates: | 37°22'50"N by 120°34'5"W |
Operator/Owner: | Merced County Department of Commerce, Aviation, and Economic Development |
Airport Type: | Public |
Elevation: | 191 feet (58 meters) |
# of Runways: | 1 |
View all routes: | Routes from MER |
More Information: | MER Maps & Info |
Facts about Momote Airport (MAS):
- Because of Momote Airport's relatively low elevation of 12 feet, planes can take off or land at Momote 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.
- The closest airport to Momote Airport (MAS) is Emirau Airport (EMI), which is located 179 miles (287 kilometers) E of MAS.
- The furthest airport from Momote Airport (MAS) is Governador Carlos Wilson Airport (FEN), which is nearly antipodal to Momote Airport (meaning Momote Airport is almost on the exact opposite side of the Earth from Governador Carlos Wilson Airport), and is located 12,028 miles (19,357 kilometers) away in Fernando de Noronha, Pernambuco, Brazil.
- Momote Airport (MAS) currently has only 1 runway.
- After liberating the airfield on 2 March 1944, the 40th Naval Construction Battalion repaired the airfield and the airfield became operational on 18 May 1944, although fighters were landing at the airfield only two days after occupation.
Facts about Castle Airport (MER):
- It was estimated that the cost to relocate the 129 RQW to Castle, to include associated military construction costs, could be recouped in seven years.
- The airport is located at the former Castle Air Force Base which closed in 1995.
- The furthest airport from Castle Airport (MER) is Tôlanaro Airport (FTU), which is located 11,312 miles (18,204 kilometers) away in Tôlanaro, Madagascar.
- EPA investigations have been completed at multiple areas of contamination including landfills, discharge areas, chemical disposal areas, fire training areas, fuel spill areas, and polychlorinated biphenyl spill areas.
- The closest airport to Castle Airport (MER) is Merced Regional Airport (MCE), which is located only 7 miles (12 kilometers) SSE of MER.
- Castle Airport (MER) currently has only 1 runway.
- Because of Castle Airport's relatively low elevation of 191 feet, planes can take off or land at Castle 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.