Sheep Farts Force Malaysian-Bound Flight Into Emergency Landing

A Singapore Airlines flight was forced to land early due to a buildup of methane, due to "emissions" from sheep aboard the plane. Tim Chong/Reuters

A Singapore Airlines Boeing 747 was making a routine flight from Sydney to Kuala Lumpur last week when, all of the sudden, its smoke alarm went off.

But it wasn't smoke, exactly. As it turns out, the alarm was triggered by massive amounts of methane that had accumulated inside the fuselage, according to The Aviation Herald.

All this gas was produced by "emissions"—farts, that is—and manure from the 2,186 sheep aboard the plane. The aircraft made an emergency landing on the Indonesian island of Bali about 45 minutes later and stayed grounded for two and a half hours, before resuming its flight to Malaysia.

A different type of gaseous emission—the eruption of volcanic Mount Rinjani, on Lombok Island near Bali—has led to the cancellation of scores of flights and stranded thousands of tourists on the island today, according to the Associated Press.

In 2014, Australia exported a total of 2,298,455 head of live sheep, according to industry-tracking group LiveCorp. The country is the world's largest exporter of live sheep and goats.