FL953 – Insufficient Rear Panel Joint Strength – 2020-2023 Thomas Built Saf-T-Liner HDX School Buses

September 14, 2022 NHTSA CAMPAIGN NUMBER: 22V688000

Insufficient Rear Panel Joint Strength/FMVSS 221

A school bus panel with insufficient joint strength may separate during a crash, increasing the risk of injury.

 

NHTSA Campaign Number: 22V688

Manufacturer Daimler Trucks North America, LLC

Components STRUCTURE

Potential Number of Units Affected 1,259

 

Summary

Daimler Trucks North America LLC (DTNA) is recalling certain 2020-2023 Thomas Built Saf-T-Liner HDX school buses. The rear exterior side-body panel was manufactured with insufficient joint strength. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 221, “School Bus Body Joint Strength.”

 

Remedy

Dealers will add additional mechanical fasteners to secure the joints, free of charge. Owner notification letters are expected to be mailed November 13, 2022. Owners may contact DTNA customer service at 1-800-547-0712. DTNA’s number for this recall FL953.

 

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

 

Check for Daimler Trucks North America Recalls

 


Thomas Built Buses
Thomas Built Buses

 


Chronology :

On or about August 16 2022, Thomas Built Buses identified a school bus built with rear exterior 20-gauge side sheet joints with lower than expected tensile strength. These side sheet joints were identified during a periodic joint strength verification test. Thomas Built Buses immediately began an investigation to determine the scope and potential impact of this verification finding. On August 26 2022, Thomas Built Buses continued working to identify potentially affected vehicles and conducting additional testing. On September 9 2022, DTNA decided to initiate a voluntary noncompliance recall for certain Thomas Built Buses HDX school buses built with these 20-gauge side sheet joints and with the certain configuration of fasteners that may not meet the joint strength requirements of FMVSS 221 S5.1.

 


4 Affected Products

Vehicle

MAKE MODEL YEAR
THOMAS BUILT BUSES SAF-T-LINER HDX 2020-2023

 


3 Associated Documents

Defect Information Report

RMISC-22V688-5134.pdf 697.477KB

RMISC-22V688-5134

 


Recall Acknowledgement

RCAK-22V688-1386.pdf 645.538KB

RCAK-22V688-1386

 


Noncompliance Notice 573 Report

RCLRPT-22V688-2425.PDF 241.93KB

RCLRPT-22V688-2425

 


https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=22V688&docType=RCL

 


 

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