Boeing 787 The Dergenener erosion issue can cause liberation

In the proposed flight directions (AD), the Federal Aviation Administration (FAA) warned of Boeing 787

The halls that are likely to be released in specific circumstances.

Paragraphs are liberated

In a notice of proposed rules (NPRM), the Federal Aviation Administration suggested adopting a Boeing advertisement 787-8,

787-9, and 787-10 plane after reports on corrosion in one or more of the eight appropriate societies and adjacent armed components on certain attachments on the plane.

According to FAA, corrosion, resulting from “The predecessor interaction of carbon fibers and fibers as a result of the wet environment in the toilet”, ” It can lead to the liberation of the aircraft ranking from the lower mountains during an event with high G forces.

This may lead to a possible serious injury to passengers and/or flight crew or “The obstruction of the displaced toilet that prevents the exit through the corridor and comes out.”

FAA estimated that 159 787-8, 787-9,

787-10 aircraft in the United States will be affected by the direction that is still not exposed. After the process of setting the regular rules, stakeholders are invited to comment on the organizer’s proposals until May 22.

Inspection and reviews

Summarize the proposed changes to address erosion issues, FAA

Will workers conduct a detailed examination of low low assemblies and the central division threshold for corrosion, registration on the editing record sign, and if any erosion is found, procedures for correcting the condition.

“This proposed advertisement will also require a review of the current maintenance program to integrate a detailed check -up for armed vertical headquarters for corrosion or damage.”

The Federal Aviation Administration has estimated that the inspection and registration of signs would take 15 working hours per toilet, at a labor cost per hour estimated at $ 85, which leads to total expenses associated with employment of $ 1,275 per toilet. The parts will cost $ 3,700 per toilet, which leads to airlines that have incurred $ 4,975 at costs to fix one interface.

With up to six of them on a plane, this can reach $ 29,850, with the total cost of all 787 years of American operators up to $ 4.7 million, according to FAA estimates.

In addition, the organizer assumed that reviewing the current maintenance program takes 90 hours of work for each operator. However, the number may vary. Since the airlines include changes in the maintenance program for their fleet (their fleet), the Federal Aviation Administration concluded that an estimate of each operator is more accurate than the cost of all aircraft, which leads to an estimated cost of $ 7650 to change the maintenance program for each plane.

“The Federal Aviation Administration has not received any specific data to highlight the cost estimates of the reforms on the specific condition in this proposed announcement.”

The agency warned that it included “Everything is known” Expenses can be covered in their estimates, however, some costs for compliance with the guidance can be covered, which may reduce the costs of operators.

It is possible that the entire United States fleet will affect the entire Fleet

according to Ch-aivation Data, in the United States, US Airlines, Hawaii Airlines, and United Airlines currently contain 138 787s active, stored or maintenance.

This is divided between 48 787-8s, owned US Airlines

(36) United Airlines (12), 68 787-9s, owned by US Airways (22), Hawaiian Airlines

(Three), United Airlines (43), and 21 787-10S,

They are all owned United Airlines.

FAA depends on its proposed guidance Boeing

Special attention requirements (RB) B787-81205-SB250302-00 RB, Issue 001, which was issued by the plane maker on August 21, 2024. RB also determines the affected aircraft numbers (LN) and provides compliance and applied times when completing the remaining procedures.