The FAA grounded the 787 on Jan. 16 following two incidents. On Jan. 7, at Boston Logan Airport, the lithium-ion battery used by the auxiliary power unit in a JAL 787 began to smoke and then caught fire while the plane was parked. On Jan. 15, an ANA 787 made an emergency landing after a battery overheated, spraying hot chemical residue into the electronics bay.
This week, the two Japanese carriers again experienced 787 problems, although the problems did not involve the lithium ion batteries. On Wednesday, an ANA flight from Ube to Tokyo's Haneda airport was cancelled because an engine would not start. On Tuesday, a JAL 787 flight returned to Haneda shortly after takeoff because of a problem in its deicing system. The flight was en route to Singapore.
Shortly after noon on Wednesday, Boeing shares were trading down 68 cents to $101.07. The shares are up 32% this year.