The Daily Digit today is 24.
Twenty four Dreamliners are sitting idle at airports in Japan, after one of them made an emergency landing on Wednesday.
The reason was a battery alert in the cockpit. One passenger told a Japanese broadcaster there was a strong, burning smell.
A Japanese transport ministry official said the incident was "highly serious."
The emergency landing is the latest in a line of 787 mishaps. Others include fuel leaks, a battery fire, wiring problem, a glitch with brakes and a cracked cockpit window.
Out of 24 grounded aircraft, seven belong to Japan Airlines and 17 to All Nippon Airways, which decided to stop flying the planes. Just last week they maintained their support.
Right now, there are only 50 Dreamliners in operation, which means roughly half are no longer in the air.
Daily Digit: 24 Dreamliners grounded (0:57)
Jan. 16 - Japan's two leading airlines grounded their fleets of Boeing 787s after a Dreamliner passenger jet was forced to make an emergency landing. Conway G. Gittens reports. ( Transcript )