FAA Proposed Rule Addresses Overheating Concerns in B787 Anti-Ice System

In the realm of aviation safety, vigilance is paramount. As Boeing navigates challenges with its 737 Max, a new focal point emerges as the Federal Aviation Administration (FAA) sets its sights on addressing potential risks associated with the anti-ice system on Boeing’s 787 Dreamliners.

The latest development comes in the form of a proposed FAA rule unveiled on February 16, shedding light on a concerning issue involving missing seals within the engine anti-ice systems of 787s. The lack of these seals could allow hot air from the anti-ice systems to overheat several engine inlets, resulting in a situation that requires quick action.

The proposed Airworthiness Directive (AD) calls for thorough examinations for heat damage and, if necessary, the replacement of individual components. Operators would specifically have to update their minimum equipment lists (MEL), perform a comprehensive records check, look for signs of heat damage on engine inlet cowl assemblies and install or replace seals in the engine anti-ice duct. To maintain airworthiness, any damage found would require replacements or repairs.

The FAA’s proposal highlights how quickly this issue needs to be resolved in order to avoid possible corrosion of engine inlets, which could jeopardise the aircraft’s integrity and safety.

The FAA has classified this action as a “interim action,” which is noteworthy because it indicates that action must be taken immediately while the matter is still being investigated. The proposed rule highlights the FAA’s proactive approach to resolving new issues and underscores the agency’s dedication to aviation safety.

The finding of missing seals and the ensuing overheating highlight the intricate relationship that exists in contemporary aircraft systems between engineering design and operational safety. The FAA wants to ensure that the Boeing 787 fleet operates to the highest standards of safety and airworthiness, so it has mandated corrective actions and inspections.