<h1>Air India Express flight incident: PAN-PAN engine fault prompts mandatory reporting, regulator safety investigation and potential remedies</h1> An Air India Express passenger flight from Delhi to Indore experienced a mid-air engine fault with 161 passengers aboard; the pilot issued a PAN-PAN distress call indicating a non-life-threatening urgent situation and the aircraft landed safely 20 minutes late. Airport authorities implemented standard operating procedures, including fire and medical standby. Legally, the incident triggers mandatory reporting and an aviation safety investigation by the regulator to determine mechanical causes, compliance with maintenance and crew protocols, and any operational lapses. Potential consequences include airworthiness directives, enforcement actions, insurance claims, and passenger remedies for delays or disruption under applicable aviation and consumer protection rules.