393.207B — Leaf spring cracked or broken
49 CFR 393 • Vehicle Maintenance BASIC • Severity 4/10
What this violation means
One or more leaves in a leaf-spring assembly cracked, broken, or missing. OOS. Suspension can shift under load, changing geometry and overloading remaining leaves.
How often this is cited (last 24 months)
In the last 24 months, 393.207B was cited 2,256 times at roadside inspections against 1,666 carriers, and 50% of those citations were out-of-service violations. It ranks #37 among the violation codes in our records by citation count. Most recent citation on record: Oct 13, 2026.
Why this gets cited
Overloading. Fatigue at 800K+ miles. Improper repair (welded spring — never weld a leaf spring, replace it). Off-pavement use beating suspension.
How to fix / prevent
Replace the affected spring pack. Don't replace just one leaf — replace the matched set for that axle. Air-ride conversions on retrofit trucks eliminate this category of failure.
Out-of-service criteria
Yes — this violation IS out-of-service eligible. When an inspector finds 393.207B during a Level 1, 2, or 3 inspection, they can place the Vehicle OOS using the North American Standard Out-of-Service Criteria. OOS means the truck cannot move from the inspection site until the defect is corrected (vehicle OOS) or the driver is replaced (driver OOS). For carriers, every OOS violation adds time-weighted points to your CSA Vehicle Maintenance BASIC — and it shows in the public SMS data within 30 days. For drivers, an OOS event stays on PSP for 3 years.
CSA / SMS impact
393.207B carries a severity weight of 4/10 in FMCSA's Safety Measurement System (SMS). Higher weights mean faster CSA percentile movement. Combined with a time-weighting factor (2× for citations within the last 6 months, decaying over 24 months), this violation can move your Vehicle Maintenance BASIC percentile significantly if it stacks with similar citations across your fleet. The threshold for FMCSA intervention is the 65th percentile for most BASICs (50th for Hazmat and Passenger Carrier). Once you cross that, FMCSA can send a Warning Letter, Off-Site Investigation, or full Compliance Review.
How to read this: a single citation rarely puts you over threshold — it's the pattern. Track your inspection rate per power unit and aim for OOS rate under 5% (industry average is 21%).
Carriers recently cited (last 24 months)
Carriers most-recently cited for 393.207B in FMCSA inspection records (rolling 24-month window).
- 23×NEW PRIME INCDOT #3706 • last cited 2026-08-03
- 20×SERVICIO INTERNACIONAL DE ENLACE TERRESTRE SA DE CVDOT #818175 • last cited 2026-07-23
- 16×STEVENS TRANSPORT INCDOT #79466 • last cited 2026-07-29
- 16×J B HUNT TRANSPORT INCDOT #80806 • last cited 2026-07-25
- 13×CRETE CARRIER CORPORATIONDOT #73705 • last cited 2026-06-30
- 11×MVT SERVICES LLCDOT #270179 • last cited 2026-04-24
- 10×SWIFT TRANSPORTATION COMPANY OF ARIZONA LLCDOT #54283 • last cited 2026-06-24
- 10×US XPRESS INCDOT #303024 • last cited 2025-12-28
- 10×SAUL BALDOMERO RODRIGUEZ SANCHEZDOT #635061 • last cited 2025-10-27
- 9×OPERADORA DE TRANSPORTE INTERNACIONAL SA DE CVDOT #683428 • last cited 2026-06-15