According to the DGCA circular dated July 14, the fuel control switch locking feature on nearly all major Boeing aircraft currently in commercial operation have to be inspected.

The DGCA has asked airlines to inspect the fuel switch locking system in their Boeing 787 and 737 planes after a preliminary probe report into the Air India crash found that the switches were cut off before the accident.

The DGCA has mandated that all Indian operators of affected aircraft must carry out inspections under the FAA’s Special Airworthiness Information Bulletin (SAIB) NM-18-33, dated 17 December 2018. This SAIB highlights the risk of disengagement of the fuel control switch locking mechanism across several Boeing aircraft models.