DETROIT (AP) — Cars and trucks from the 2008 model year or older that were originally sold or registered in high humidity areas along the U.S. Gulf Coast are getting top priority for repairs as the government commences the massive Takata air bag inflator recall.
Honda Motor Co. leads all automakers with nine models designated as having the highest risk from air bag inflators that can explode with too much force, spewing metal shrapnel into drivers and passengers. Fiat Chrysler was second with seven.
On Nov. 3, the National Highway Traffic Safety Administration took control of the recall, which covers 19.2 million vehicles and is the largest in U.S. history. The agency wants to speed up the pace of repairs and make sure that the limited supply of replacement parts gets to vehicles with the highest risk.
Click through to see photos from the airbag recall:
Takata airbag recall
Honda has the most high risk models in Takata air bag recall
Transportation Secretary Anthony Foxx speaks about the Takata air bag inflator recall, Tuesday, May 19, 2015, at the Transportation Department in Washington. Air bag maker Takata Corp. has agreed to declare 33.8 million of its inflator mechanisms defective, effectively doubling the number of cars and trucks that have been recalled in the U.S. so far. (AP Photo/Jacquelyn Martin)
WASHINGTON, DC - MAY 19: NHTSA Administrator Mark Rosekind (L) and U.S. Transportation Secretary Anthony Foxx (R) speak about the Takata air bag recall during a news conference at the Department of Transportation May 19, 2015 in Washington, DC. It was announced that the Takata Corp. has agreed to declare 33.8 million of its inflator mechanisms defective which will bring the number up to about 34 million autos, making it one of the largest consumer product recalls ever. (Photo by Mark Wilson/Getty Images)
FILE - In this Nov. 20, 2014 file photo, Senate Commerce Committee member Sen. Bill Nelson, D-Fla. displays the parts and function of a defective airbag made by Takata of Japan that has been linked to multiple deaths and injuries in cars driven in the U.S., during the committee's hearing on Capitol Hill in Washington. Government statistics released Thursday, Feb. 12, 2015 show that automakers issued 803 recalls totaling almost 64 million vehicles in the U.S. last year, more than double the old record set a decade earlier. (AP Photo/J. Scott Applewhite, File)
In this Dec. 22, 2014 photo, a woman checks out a new Honda City at a Honda showroom in Petaling Jaya, Malaysia. Six years ago, Honda began recalling Takata driverâs side air bags in the U.S. because they could inflate with too much force and spew shrapnel into the vehicle. But it wasnât until last month after a crash in Malaysia that killed a woman and her unborn child that Honda recalled driverâs side air bags in small cars from Asia and Europe. (AP Photo)
In this photo taken Monday, Dec. 22, 2014, Honda cars are worked on at the service center in Petaling Jaya, Malaysia. Six years ago, Honda began recalling Takata driverâs side air bags in the U.S. because they could inflate with too much force and spew shrapnel into the vehicle. But it wasnât until last month after a crash in Malaysia that killed a woman and her unborn child that Honda recalled driverâs side air bags in small cars from Asia and Europe. (AP Photo)
FILE - In this Nov. 20, 2014 file photo, Senate Commerce Committee member Sen. Bill Nelson, D-Fla. displays the parts and function of a defective airbag made by Takata of Japan that has been linked to multiple deaths and injuries in cars driven in the US, during the committee's hearing on Capitol Hill in Washington. The top Japanese auto safety official acknowledged Friday, Dec. 5 that Japan's recall system needs an overhaul to better respond to global problems highlighted by the debacle over Takata air bags that can explode. "The framework in place now doesn't allow for that," Masato Sahashi, director of the recall office at the transport ministry, said in a telephone interview. "Japanese people are very worried about the safety of their cars." (AP Photo/J. Scott Applewhite, File)
Child seats, manufactured by Takata Corp. are displayed at a Toyota Motor Corp.'s showroom in Tokyo Thursday, Nov. 6, 2014. Takata, the Japanese air bag maker embroiled in a massive recall totaling some 12 million vehicles globally, says it's taking more special losses for new recalls and will sink deeper into the red for the fiscal year. Takata said Thursday it will record a 25 billion yen ($218 million) loss for the fiscal year through March 2015. It previously forecast a 24 million yen ($210 million) forecast. (AP Photo/Shizuo Kambayashi)
Parts of pyro-electric airbag initiators lie in a production line at the international automotive supplier Takata Ignition Systems GmbH in Schoenebeck, Germany, Thursday, April 17, 2014. The Takata Corporation is a leading global supplier of automotive safety systems such as seat belts, airbags and child seats. The company has 46 plants in 17 countries around the world. (AP Photo/Jens Meyer)
The logo of the Toyota automobile company is seen on the window of a company showroom in the Indian capital New Delhi on May 13, 2015. Japanese auto giants Toyota and Nissan on May 13, 2015, said they were recalling 6.5 million vehicles globally in the latest chapter of an exploding airbag crisis linked to several deaths. The world's biggest automaker said its recall of five million vehicles affected 35 models globally produced between 2003 and 2007, while Nissan said it was calling back 1.56 million vehicles also due to faulty airbags made by embattled supplier Takata. AFP PHOTO / Chandan KHANNA (Photo credit should read Chandan Khanna/AFP/Getty Images)
Japanese auto parts maker Takata's child car seats are displayed at a showroom in Tokyo on May 20, 2015. Takata is doubling a recall of US cars with potentially deadly airbags to a record nearly 34 million vehicles, sending the firm's shares plunging in Tokyo. AFP PHOTO / Yoshikazu TSUNO (Photo credit should read YOSHIKAZU TSUNO/AFP/Getty Images)
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Even with government management, it could take as long as four years to replace all 23.4 million potentially faulty inflators that are now on U.S. roads.
High-priority models were announced as part of an agreement with Takata Corp. of Japan to pay up to a record $200 million penalty for deception in reporting problems and delays in fixing the inflators.
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Cars and trucks from Honda and its Acura luxury brand date on the high-risk list date to the 2001 model year.
Vehicles from 11 other car and truck makers also are on the list.
Takata inflators can blow apart a metal canister and spew shrapnel into drivers and passengers. Eight people worldwide have been killed by the inflators and more than 100 injured.
See stats on the most common vehicle components recalled:
In addition to Honda and Fiat Chrysler, Toyota had five vehicles in the top group, and Ford, Mazda, Nissan and Subaru tied with three each. Daimler vans, Mitsubishi and General Motors each had two models, while BMW and Daimler Trucks had one each.
In documents, NHTSA said cars and trucks in the "Priority One" group also have driver's air bags that have been recalled, or both the driver and passenger inflators are faulty, the documents said.
NHTSA defines the high-humidity region as Alabama, Florida, Georgia, Hawaii, Louisiana, Mississippi, Texas, Puerto Rico, American Samoa, Guam, Saipan, and the U.S. Virgin Islands. The agency says people with the vehicles should get them repaired as soon as possible.
The agency set deadlines to make sure older cars in the risky areas get inflators first. Honda, which is Takata's largest customer, has hired other inflator manufacturers to make replacement parts in addition to Takata. Honda and some other automakers have since said they won't buy Takata inflators.
Honda says it has fixed 44 percent of the recalled vehicles nationwide, nearly double the rest of the industry, which is at roughly 23 percent.
Ammonium nitrate is a likely cause of Takata's problems because it can degrade when exposed to airborne moisture and burn faster than expected. Takata has agreed to stop signing new contracts to make ammonium nitrate inflators.
All 12 automakers are required to contact other manufacturers to get inflators faster, and they must have a sufficient number of inflators to satisfy demand from "Priority One" vehicle owners by March 31, 2016. The recall of top priority vehicles has to be completed by Dec. 31, 2017, while all vehicles in four priority groups have to be fixed by the end of 2019.
A complete list of recalled vehicles can be found at http://www.safercar.gov/rs/takata/images/pdfs/TakataPriorityGroups.pdf
Unless Takata can prove to NHTSA that its inflators are safe, it may have to recall all of them, even those not yet implicated in the case. NHTSA says it does not know how many cars and trucks could be added to the massive recall.