What happens if you're cited for semi-trailer pintle hook wear? Inspect the data on OOS rates, which states cite it most, and what to do next.
Ranks #1,953 of 3,146 FMCSR codes by citation frequency • OOS rate of 100.0% is above the FMCSR-wide average of 33.3%.
Coupling - Semi-Trailer, pintle hook has more than 20% wear in the horn section.
Direct answers grounded in TruckCodex inspection data
Yes. Across our 13 million+ inspection records, this code has a 100.0% out-of-service rate—every single citation resulted in an OOS placement. This is far higher than the 31.4% average OOS rate across all FMCSR codes. When an inspector finds more than 20% wear in the pintle hook horn section, the coupling is deemed unsafe and the vehicle will not be permitted to continue operation until repaired.
It is significantly more severe than most peer violations in the vehicle maintenance category. Our data shows that 396.3(a)(1), the general inspection/repair/maintenance code, has a 45.3% OOS rate. Codes like 396.17C-PI (no proof of periodic inspection) and 393.47E (slack adjuster defective) carry 0.0% OOS rates. The 100.0% rate for 396.3A1-CDTHSW places it at the strict end of enforcement—inspectors do not pass worn pintle hooks.
First, do not move the vehicle. You are out of service. Contact a certified repair shop qualified to inspect and replace coupling hardware. Our inspection data shows this violation often co-occurs with frame damage (393.201A-FRWC), brake system issues (393.43D-B), and tire defects (393.75C-TAOTD-LT2/32)—have the shop perform a full pre-departure inspection. Document all repairs. Request a new OOS inspection before attempting to operate.
Over the last 180 days, California leads with 4 citations (100% OOS rate), followed by New York with 2 citations (100% OOS rate), and Florida and Nebraska each with 1 citation (100% OOS rate). Nationally, this code ranks #1921 out of 3,036 FMCSR codes by citation volume—it is relatively uncommon, but when it appears, enforcement is consistent and immediate.
Over the last 90 days, only 2 citations have been recorded across the entire country, showing this remains a rare find. However, looking back 12 months, we see 13 citations with slight clustering in October and November 2025 (3 citations each month). The pattern suggests seasonal or fleet-specific enforcement spikes rather than a trend toward increased frequency. Overall volume remains very low.
You can file a Request for Data Review (RDR) through FMCSA's DataQS system if you believe the citation is factually inaccurate or the inspection was improper. However, this violation is equipment-based (the pintle hook itself), not documentation-based, so contestation typically requires evidence that the inspector's measurement or assessment was wrong. If you had the coupling inspected and certified within the inspection window, that documentation strengthens a challenge.
Ford accounts for 9 of the 21 all-time citations for this code. Freightliner (FRHT) follows with 3 citations, and Chevrolet and GMC each have 2. This reflects the mix of heavy-duty tractors and smaller commercial vehicles operating with pintle couplings. No single make dominates to suggest a manufacturing defect; the citations are distributed across typical commercial equipment.
Both. Vehicle maintenance violations are safety events tied to the carrier's operations and record, but they also appear on your inspection history. Your carrier's safety record (including OOS violations) affects CSA scores, insurance rates, and audit outcomes. More immediately, this OOS placement prevents you from operating—so your ability to work is directly affected until the repair is verified.
Where 396.3A1-CDTHSW is most commonly cited (last 180 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.