A United States Air Force flight bound for Antarctica abruptly returned to New Zealand this week after aviation officials warned of “potentially hazardous” space activity. The warning originated with Russia and involved a planned missile launch affecting international airspace.
The C 17A Globemaster III departed Christchurch International Airport on Tuesday at approximately 9 a.m. local time under the call sign ICE28. Flight tracking data from Flightradar24 showed the massive cargo aircraft returning to Christchurch at about 11:30 a.m.
New Zealand’s Civil Aviation Authority said it knew the military flight had changed course after the agency issued a Notice to Airmen, commonly called a NOTAM. Such notices provide pilots and aircraft operators with information about hazards that could affect a planned route.
According to the authority, the Russian Air Traffic Management Corporation notified New Zealand officials about the expected space activity. The agency later clarified that Russia had reported a planned missile launch and a potential danger to international airspace inside New Zealand’s Oceanic Flight Information Region.
“As a result, we put in place a danger area and issued a NOTAM to alert aircraft operators to the potential hazard,” the authority spokesperson said. The move supplied the Air Force crew with information needed to assess the risk while operating over a remote stretch of ocean.
“This does not prevent aircraft from flying through the area, operators make their decisions based on the information available,” the spokesperson added. In this case, Air Force planners apparently decided discretion was the better part of valor, especially when Russia was preparing to send a missile skyward.
New Zealand’s Oceanic Flight Information Region covers roughly 30 million square kilometers across the South Pacific Ocean, Southern Ocean and Tasman Sea. Much of that enormous zone lies over international waters, where national authorities have only limited power to regulate outside activity.
“Much of our Oceanic FIR is over international waters, where we have limited control over activities,” the spokesperson said. That reality makes timely notification particularly important because aircraft can be hours from suitable diversion airports while crossing the region.
“It is normal practice for Airspace Authorities and Air Traffic Service Providers, provided with such hazard notifications to issue NOTAMs,” the spokesperson continued. Although such warnings are routine aviation tools, a Russian missile launch notice along an Antarctic resupply route is hardly an everyday scheduling inconvenience.
A spokesperson for United States Pacific Air Forces described the trip as a routine resupply mission planned for this time of year. The Air Force regularly uses Christchurch as the main staging point for flights carrying personnel, equipment and supplies south to Antarctica.
“Christchurch is the gateway to Antarctica,” the PACAF spokesperson said. Its location and established logistical infrastructure make the New Zealand city essential to American and allied operations supporting research stations on the frozen continent.
“Both the United States Air Force and New Zealand Defense Force conduct operations and logistical support out of Christchurch in support of our Antarctic science programs,” the spokesperson added. Those missions sustain teams working in one of the planet’s most isolated and unforgiving environments.
The turnaround occurred during the Air Force’s annual Winter Fly in period, commonly known as WinFly. Conducted near the end of August, the operation moves advance teams, equipment and cargo to McMurdo Station and Scott Base before the primary Antarctic research season.
PACAF did not confirm whether ICE28 was directly assigned to WinFly. However, an Air Force release from 2012 reported that a C 17 delivered more than 300 passengers and 230,000 pounds of cargo to Antarctica during that year’s operation.
“Using Christchurch International Airport, New Zealand as the base of operations, the mission of WinFly is to deliver advance teams and cargo to the remote research center in preparation for the main season of Operation Deep Freeze,” the release reads. Operation Deep Freeze supports the United States Antarctic Program, which is managed by the National Science Foundation and enables continuous scientific work in the region.
The Boeing C 17 Globemaster III is built to rapidly transport troops and heavy cargo to major operating locations or forward bases. It can also perform tactical airlift, airdrop and aeromedical evacuation missions, but even that workhorse does not need to gamble with a Russian missile hazard over empty southern seas.
