NEW YORK (CNN/Money) - The chairman of Japan Airlines resigned after one of the airline's jets was forced to make an emergency landing May 8, the most recent in a series of safety-related incidents.

Isao Kaneko, 65, said May 9 he would retire as president and CEO at the end of the month after 45 years with the airline.

Kaneko did not say why he would retire, but his announcement comes one day after a Japan Airlines jet carrying 355 passengers from New York to Tokyo reportedly made an emergency landing in Sapporo after a sudden drop in cabin air pressure.

There were reportedly no injuries May 9, but the airline has garnered a reputation for safety problems. In April, Japan Airlines unveiled a series of measures to improve safety monitoring and reporting within the company, citing a "series of incidents involving JAL maintenance and flight operations between December 2004 and March 2005. According to the airline, these incidents included use of "inappropriate" parts in landing gear, operating a flight with disarmed emergency equipment and failure to confirm administrative instructions at airports in Japan and South Korea.