Aircraft from the U.S. Air Force, U. S. Marine Corps, Japan Air Defense Force and Republic of Korea Air Force conduct a show of force flight south of the Demilitarization Zone in South Korea on Aug. 31.

Aircraft from the U.S. Air Force, U. S. Marine Corps, Japan Air Defense Force and Republic of Korea Air Force conduct a show of force flight south of the Demilitarization Zone in South Korea on Aug. 31. Staff Sgt. Alex Fox Echols III/Air Force

Could North Korea Shoot Down U.S. Warplanes?

Some of Pyongyang's surface-to-air missiles are old, but its newer ones could threaten American aircraft.

Could North Korea make good its threat, delivered on Monday, to shoot down American warplanes near its coastline?

“I don’t think it’s something that can be dismissed,” said Tom Karako, who runs the Missile Defense Project at the Center for Strategic and International Studies.

North Korea's surface-to-air missiles include S-200s acquired from the Soviet Union in the 1980s. But it also has a newer missile, the KN-06, which is similar to newer, more modern Russian and Chinese weapons.

Like the ICBMs being tested by North Korea, the KN-06 is mobile, so its location is not always known.

“I don’t think any pilot would fail to take [air defenses] seriously,” Karako said.

The S-200 air defense system “should be well-known to the U.S. as it was operated by Libya and Syria, as well as Poland and the Czech Republic — the latter two are now NATO members,” Byron Callan, an analyst with Capital Alpha Partners, wrote in a note to investors this week.

The U.S. B-1B bombers and F-15C Eagles that skirted North Korea’s cost in recent days are among the older jets in the American arsenal, more visible on air-defense radar than the newer, stealthier F-22 and F-35 fighters and B-2 bomber.

Pyongyang also has aircraft. A 2015 Pentagon report says the North Korean air force has 1,300 combat aircraft, mostly Soviet-built.

“The [North Korea Air Force’s] most capable combat aircraft are its MiG-29s, procured from the Soviet Union in the late 1980s, its MiG-23, and its SU-25 ground-attack aircraft,” the report said. “However, the majority of its aircraft are less capable MiG-15s, MiG-17s, MiG-19s (F-6), and MiG-21s.”

How would American planes stack up against these planes? “[T]hese are aged and would be no match for U.S. air superiority combat aircraft,” Callan wrote.