What 393.104D-C means in plain language
When an officer cites you for 393.104D-C, they've found that a tiedown or other cargo securement device on your truck is damaged, defective, or no longer able to do its job. This isn't about loose cargo or improper securing technique—it's about the physical condition of the equipment itself: a strap that's frayed or torn, a chain with broken links, a ratchet that won't tighten, or a header board that's cracked and can't hold load pressure.
The regulation requires that every device you use to keep cargo in place must be in working order. If an inspector finds one that's compromised, that's a violation. The concern is straightforward: defective securement equipment can fail mid-haul, sending your load onto another vehicle or the roadway.
What our enforcement data actually shows
Across our 13 million+ inspection records, 393.104D-C ranks #1200 out of 3,036 FMCSR codes by citation volume. We've seen 214 all-time citations for this violation, with 147 citations in the last 12 months and 32 in the last 90 days. The monthly trend shows fluctuation—May 2025 saw 16 citations, while April 2025 had 5—but the pattern is steady at roughly 10–15 citations per month.
The out-of-service rate for 393.104D-C is 22.9% all-time, meaning inspectors placed 49 trucks out of service and allowed 165 to continue. This rate is notably lower than the all-FMCSR average of 31.4%, suggesting inspectors often view damaged tiedowns as correctable during the roadside stop rather than an immediate safety-critical shutdown. That said, OOS placement does happen: in March 2026, 5 of 17 citations (29.4%) resulted in OOS, while in October 2025, only 1 of 19 (5.3%) did.
Who gets cited most
Our data shows geographic concentration. California leads heavily with 32 citations in the last 180 days and a 56.3% OOS rate—the highest by far. New York follows with 7 citations but 0 out-of-service placements. Georgia rounds out the top three with 5 citations and also 0 OOS placements.
The wide gap between California's OOS rate and the others is material: California inspectors are more likely to sideline a truck for this violation than their counterparts in New York or Georgia. If you operate regularly in California, damaged securement equipment is a higher-stakes find.
Among carriers in our all-time database, Firetower Ag Company (USDOT 3810076) appears most frequently with 4 citations, followed by Efficiency USA LLC (USDOT 3466888) with 3. These numbers reflect our citation records and do not imply negligence; they reflect exposure and roadside encounter rates.
How severe is this compared to similar codes
In the Vehicle Maintenance category, 393.104D-C occupies a middle ground. Inoperable required lamps (393.9(a)) dwarfs this code by volume—660,737 citations—but carries a lower OOS rate of 15.4%. No proof of periodic inspection (396.17C-PI) is also far more common at 212,081 citations with a 0.0% OOS rate, meaning inspectors virtually never shut down trucks for missing inspection paperwork.
On the other end, general inspection/repair/maintenance violations (396.3(a)(1)) occur 236,919 times but carry a 45.3% OOS rate, nearly double the all-FMCSR average. By comparison, 393.104D-C sits between these poles: less frequent than lamps or paperwork issues, but far less likely to result in OOS than broad maintenance failures.
How to avoid it
Our data reveals patterns that point to real prevention steps:
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Pre-trip inspection of all securement hardware. Look at every strap, chain, binder, and header board before you load. Run your hands along webbing for tears or fraying. Check chains for kinks, cracks in welds, or missing links. Test ratchet handles—they should move smoothly and lock firmly. This takes 10 minutes and prevents a citation.
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Replace worn tiedowns on schedule, not when they break. Our top vehicle makes cited (Freightliners, Peterbilts, Ford, Kenworth trucks) are workhorses that run hard. Tiedown hardware degrades from sun, moisture, and load cycles. If a strap is discolored or stiff, or a chain shows rust, replace it. Don't wait for an inspection.
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Address fatigue and vehicle condition together. Our data shows that operating while ill or fatigued (code 392.2) co-occurs with damaged tiedowns in 10 shared inspections over the last 90 days. Fatigue impairs your ability to notice or care for cargo equipment. Ensure you're well-rested and that your pre-trip inspection is thorough, not rushed.
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Secure emergency equipment too. Unsecured fire extinguishers (code 393.95A4-EEUS) appeared with damaged tiedowns in 5 shared inspections. Cargo securement isn't just about freight—it's about all equipment on the vehicle. Check that extinguishers, spare parts, and tools are strapped down with functioning hardware.
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Don't ignore small defects during your shift. If you notice a ratchet handle is cracked or a strap is starting to fray, find a safe place to pull over and make a note. Report it to your dispatcher or maintenance team. A minor defect that you ignore today becomes a citation tomorrow.
The 22.9% OOS rate tells you that most citations for this code don't result in shutdown, but that's not a reason to gamble. A functioning securement system is a baseline requirement, and the five minutes spent inspecting it is time well invested.