TruckCodex

393.47A — Brake chamber - cracked/broken

FMCSA violation code under Vehicle Maintenance. 11,413 events recorded in roadside inspections. Severity weight: 8.

Severity Weight
8
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
11,413
Code
393.47A
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
8
Violation Group
—
Total Events
11,413
Carriers Cited
6,401

Violation Description

Brake chamber on CMV has a cracked or broken housing.

About This Violation Code

Code 393.47A falls under the Vehicle Maintenance BASIC category in FMCSA's Safety Measurement System (SMS). It carries a severity weight of 8 (scale 1-10, higher = more severe).

When this violation is cited during a roadside inspection, it contributes to the carrier's Vehicle Maintenance BASIC score. Carriers with high BASIC percentiles may be prioritized for FMCSA interventions including warning letters, investigations, or compliance reviews.

Regulatory Reference

Federal Motor Carrier Safety Regulations

This violation references 49 CFR 393.47A in the Federal Motor Carrier Safety Regulations.

View on eCFR.gov →FMCSA Violations Search →
Events (all time)
11,413
OOS Events
2,155
OOS Rate
18.9%
Top State (180d)
Texas
3,736 events

Top Enforcing States

Where 393.47A is most commonly cited (last 180 days)

1.Texas
3,736
OOS 12.5%
2.New Mexico
131
OOS 26.0%
3.Illinois
107
OOS 45.8%
4.Iowa
60
OOS 56.7%
5.North Carolina
26
OOS 65.4%
6.Kentucky
2
OOS 100.0%
7.Connecticut
1
OOS 0.0%
8.Pennsylvania
1
OOS 0.0%

Click a state to see roadside inspection activity, top stations, and carrier profiles in that jurisdiction.

Citation Trend (12 months)

Monthly count of 393.47A citations. Red bars mark months with OOS-triggering citations.

242
Apr
711
May
524
Jun
585
Jul
733
Aug
619
Sep
771
Oct
684
Nov
558
Dec
760
Jan
836
Feb
845
Mar
30
Apr

Most Active Stations

Inspection stations citing 393.47A most often (last 180 days)

1.YSLETA POE
521
OOS 3.3%
2.PHARR POE
455
OOS 3.1%
3.COLUMBIA POE
250
OOS 13.6%
4.BOTA POE
225
OOS 1.3%
5.VETERANS POE
133
OOS 3.0%
6.IH35 SB DEVINE SCALE
90
OOS 26.7%
7.SH-0225 IN HARRIS CO. (686-700
61
OOS 23.0%
8.INDIOS POE
59
OOS 10.2%
9.IH-0030 IN DALLAS CO. (32-64)
42
OOS 26.2%
10.US77 RIVIERA SCALE
42
OOS 45.2%

Often Cited Together

Other violations commonly found on the same inspection (last 90 days)

393.9983 co-occurrences393.45B2UV909 co-occurrences393.47E783 co-occurrences396.3A1577 co-occurrences396.5B490 co-occurrences393.53B485 co-occurrences396.3A1BOS427 co-occurrences396.5B-HWSLIW370 co-occurrences393.78348 co-occurrences392.2RG338 co-occurrences

Citation patterns suggest related root causes (e.g., HOS violations paired with logbook errors).

Top Carriers Cited

Ranked by frequency • 6,401 carriers total • Page 1 of 257

Top Carriers with 393.47A Violations

Showing 25 of 6,401

fmcsa-violations
Top Carriers with 393.47A Violations
#CarrierUSDOT# Violations
#1TRANSPORTATION AND CARGO SOLUTIONS S DE RL DE CV77997395
#2OPERADORA DE TRANSPORTE INTERNACIONAL SA DE CV68342891
#3SERVICIO INTERNACIONAL DE ENLACE TERRESTRE SA DE CV81817588
#4TRANSPORTADORA NORTE DE CHIHUAHUA S A DE C V71112571
#5AUTOTRANSPORTES VARELA DAVILA SA DE CV171682468
#6TRANSPORTES AGUILA DE CIUDAD JUAREZ SA DE CV55536547
#7SERGIO VARELA MALDONADO72522647
#8SERVICIO DE TRANSPORTE INTERNACIONAL Y LOCAL SA DE CV55734142
#9BORDER EXPRESS DE MEXICO SA DE CV169217940
#10SERVICIOS DE LOGISTICA TRANSNACIONAL EN TRANSPORTACION SA DE CV238091132
#11SERVICIO INTERNACIONAL DE LOGISTICA Y TRANSPORTE SA DE CV68992931
#12EVANS DELIVERY COMPANY INC3811129
#13THO LOGISTIC SA DE CV411394828
#14FLETES SOTELO SA DE CV25892326
#15JESUS MA VALDEZ GARCIA253478426
#16TRANSPORTES SOTO E HIJOS S A DE C V82445425
#17SOPORTE Y SERVICIOS EN PRODUCTOS INDUSTRIALES S DE RL DE CV315286825
#18BORDER FREIGHT S DE RL DE CV363853924
#19VRP TRANSPORTES DE MEXICO S DE RL DE CV66205824
#20SANDRA PATRICIA CASANOVA GUILLEN92558124
#21CARDENAL EXPRESS SA DE CV84734923
#22JAVIER ISAI CASTANEDA MORALES251415222
#23RGX TRANSPORTE DE CARGA INTERNACIONAL SA DE CV120767822
#24JULIO CESAR CIENFUEGOS GARZA238956622
#25AUTOTRANSPORTES ROMEDU SA DE CV114825922

Recent Inspections

Latest inspections where 393.47A was cited • 11,413 total events • Page 1 of 457

Recent Inspections with 393.47A

Showing 25 of 11,413

fmcsa-inspections
Recent Inspections with 393.47A
DateReport #StateLevelOOS
Apr 2, 202687487063TXLevel 1No
Apr 2, 202687488096TXLevel 1No
Apr 2, 202687487520TXLevel 1No
Apr 2, 202687488293TXLevel 2No
Apr 2, 202687486827ILLevel 1Yes
Apr 2, 202687487275TXLevel 1No
Apr 1, 202687479750TXLevel 1No
Apr 1, 202687487133TXLevel 1No
Apr 1, 202687479397TXLevel 1No
Apr 1, 202687479396TXLevel 1No
Apr 1, 202687487047TXLevel 1No
Apr 1, 202687487518TXLevel 1No
Apr 1, 202687487929TXLevel 1No
Apr 1, 202687487931TXLevel 1No
Apr 1, 202687487948TXLevel 1No
Apr 1, 202687487966TXLevel 1No
Apr 1, 202687488054TXLevel 1No
Apr 1, 202687488250TXLevel 1Yes
Apr 1, 202687478994TXLevel 2No
Apr 1, 202687488391TXLevel 2No
Apr 1, 202687487355TXLevel 1No
Apr 1, 202687479665TXLevel 2No
Apr 1, 202687487372TXLevel 1No
Apr 1, 202687479484TXLevel 1Yes
Apr 1, 202687487477TXLevel 1No

Data sources & freshness

FMCSA Vehicle Inspections and Violations
Unknown freshness
Federal Motor Carrier Safety Regulations (49 CFR)
Unknown freshness

Related records

CategoryAll Vehicle Maintenance Violations
Browse all violation codes in the Vehicle Maintenance BASIC
IndexAll Violation Codes
FMCSR violation codes by BASIC category
ReferenceFMCSA Roadside Inspections
Inspection levels and procedures
ToolSearch Carriers
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