When things go wrong, those in power often promise to make it right. But do they? In this series, The Times investigates to see if those promises were kept.

JAKARTA, Indonesia — When Lion Air Flight 610 took off in clear skies a year ago, the 737 jetliner carried with it an anti-stall system designed by Boeing that would propel the plane into a nose-dive minutes after takeoff, killing all 189 aboard.

But the plane was saddled with another safety burden . Flight 610 was operated by Lion Air, a low-cost Indonesian carrier that has benefited from its political connections to become one of the world’s fastest growing airlines, despite a questionable safety record.

While Boeing has faced intense scrutiny after two fatal crashes in less than five months, Lion Air has escaped similar attention, despite obvious failings that contributed to the disaster of Flight 610.