PHILADELPHIA (WPVI) -- SEPTA is asking the federal government for a two-week extension to complete inspections of its aging Silverliner IV railcars.

The transit agency has requested that the deadline be moved to Nov. 14. The current deadline, set by the Federal Railroad Administration, is Friday.

READ MORE | Public, City Council confront SEPTA over Silverliner IV safety inspections

The request follows concerns raised by the National Transportation Safety Board over a series of fires involving the 50-year-old railcars.

So far, SEPTA has completed inspections on 108 of the 223 cars in its fleet.

The agency says it is working diligently to meet safety standards while minimizing service disruptions.

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