DETROIT (AP) — Ford and Mazda are recalling more than 380,000 older small pickup trucks for a second time to replace Takata air bag inflators that can explode and hurl shrapnel.

The recalls cover driver and passenger inflators in certain 2004 to 2006 Ford Ranger and Mazda B-Series trucks made by Ford.

Takata uses ammonium nitrate to create a small explosion that inflates air bags. But the chemical can deteriorate over time and burn too fast, blowing apart a metal canister. At least 20 people have been killed worldwide.

The trucks were recalled in 2015 and 2016 to replace inflators with newer ones as a temporary fix. Under the latest recalls, inflators will be swapped for ones that don’t use ammonium nitrate.

Owners will be notified starting later this month.

(© Copyright 2017 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)

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