Direct answers about 393.201D citations: out-of-service risk, repair urgency, state trends, and what to do after inspection.
Ranks #663 of 3,146 FMCSR codes by citation frequency • OOS rate of 0.3% is below the FMCSR-wide average of 33.3%.
Frame accessories improperly attached
Direct answers grounded in TruckCodex inspection data
No. Across our 13 million inspection records, 393.201D results in an out-of-service order in only 0.3% of cases—just 4 instances out of 1,288 all-time citations. For comparison, the national average OOS rate across all FMCSR codes is 31.4%, making this violation one of the least likely to trigger an immediate roadside shutdown. You can typically fix frame accessory attachment issues post-inspection rather than facing an on-the-spot vehicle impound.
Moderate priority. The citation trend shows acceleration: last 90 days recorded 275 citations, up from 916 in the prior 12 months, with March 2026 alone hitting 160 citations. The uptick suggests inspectors are paying closer attention. While it won't ground your truck immediately, loose or improper frame accessories can destabilize cargo and degrade brake/steering performance—especially since our data shows 393.201D frequently co-occurs with brake tubing issues (46 shared inspections) and steering component wear (43 shared inspections). Schedule repair within 2–3 weeks.
First, document the citation details and photos. Second, inspect all frame-mounted components (steps, bumpers, toolboxes, fenders) for loose bolts, bent brackets, or missing fasteners. Third, check related systems that frequently fail together: your brake hoses and tubing, slack adjusters, and steering components. Our inspection records show that 393.201D citations occur alongside inoperable lamps (58 shared inspections) and fuel system leaks (51 shared inspections), so a full frame and underbody walk-around is wise. Fourth, have a certified tech document repairs before returning to service.
Not severe by OOS standards. At 0.3% OOS rate, 393.201D sits well below peer violations in the vehicle maintenance category. For example, inoperable lamps (393.9) carry a 15.4% OOS rate, general inspection/repair failures (396.3a1) hit 45.3%, and even slack adjuster defects (393.47E) occur in 0% of cases but represent 180,363 total citations—139x more frequent than 393.201D. Ranked #653 of 3,036 FMCSR codes by volume, this is a lower-prevalence citation that usually amounts to a documented defect rather than a critical safety shutdown.
Texas dominates. Over the last 180 days, our records show 471 citations in Texas—far ahead of Illinois (4 citations) and New Mexico (1 citation). Texas accounts for the vast majority of 393.201D enforcement activity. If you operate regionally in Texas, frame accessory integrity should be part of your pre-trip routine, especially given the concentration of enforcement there.
Yes, contestation is possible through DataQs if you have supporting evidence. Frame accessory attachment is an observable equipment condition, not a documentation defect. Gather photos showing proper fastening, maintenance records, or inspector notes that may be factually incorrect. DataQs allows drivers and carriers to challenge roadside inspection findings if the citation mischaracterizes vehicle condition or violates inspection protocol. Submit within the regulatory window with clear evidence; focus on whether the attachment actually violated safety standards or if inspector judgment was inconsistent.
Evans Delivery Company Inc leads with 15 all-time citations (USDOT 38111), followed by Maritime Services Ltd at 12 (USDOT 337587) and 4G Entities LLC at 11 (USDOT 4050066). No carrier pattern suggests a systemic fleet-wide issue. The top five carriers range from 15 to 9 citations each across our entire dataset, indicating 393.201D is scattered across different operators rather than concentrated in a few high-risk fleets. If your carrier appears in that list, work with safety to tighten frame and accessory inspection protocols.
Freightliners lead by far: 326 citations out of 1,288 total (about 25% of all 393.201D cites). Kenworth follows with 306 citations. Mack, Peterbilt, and other makes lag significantly behind. If you drive a Freightliner, pay extra attention to frame fasteners, especially on steps, brackets, and mounted equipment. Freightliners may have design factors or common wear patterns that inspectors flag more frequently, so preventive inspection of frame accessories should be a regular part of your maintenance routine.
Where 393.201D is most commonly cited (last 180 days)
Other violations commonly found on the same inspection (last 90 days)
TruckCodex aggregates official public-sector datasets. See the Source registry for dataset-level coverage and the Freshness log for last-import timestamps.
Census, SAFER, SMS, Licensing & Insurance (L&I), roadside inspections, crashes, and authority history.
Vehicle recall campaigns, defect investigations, and consumer safety complaints (SCRS).
Cross-border carrier registry and Canadian recall campaigns where applicable.
TruckCodex is an independent aggregator; it is not affiliated with FMCSA, NHTSA, EIA, or Transport Canada. Always verify compliance-critical information directly with the originating agency.