TruckCodex

393.47C — Brake actuators/chambers defective

FMCSA violation code under Vehicle Maintenance. 811 events recorded in roadside inspections. Severity weight: 7.

Severity Weight
7
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
811
Code
393.47C
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
7
Violation Group
—
Total Events
811
Carriers Cited
572

Violation Description

Brake actuators, chambers, or other brake components are defective or not functioning properly.

About This Violation Code

Code 393.47C falls under the Vehicle Maintenance BASIC category in FMCSA's Safety Measurement System (SMS). It carries a severity weight of 7 (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 393.47C in the Federal Motor Carrier Safety Regulations.

View on eCFR.gov →FMCSA Violations Search →
Events (all time)
811
OOS Events
62
OOS Rate
7.6%
Top State (180d)
Texas
265 events

Top Enforcing States

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

1.Texas
265
OOS 4.9%
2.Illinois
6
OOS 33.3%
3.Iowa
1
OOS 0.0%
4.North Carolina
1
OOS 100.0%

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

Citation Trend (12 months)

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

16
Apr
62
May
43
Jun
43
Jul
59
Aug
41
Sep
39
Oct
50
Nov
43
Dec
53
Jan
53
Feb
58
Mar
3
Apr

Most Active Stations

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

1.COLUMBIA POE
75
OOS 4.0%
2.PHARR POE
32
OOS 0.0%
3.BOTA POE
24
OOS 0.0%
4.INDIOS POE
23
OOS 13.0%
5.YSLETA POE
12
OOS 0.0%
6.VETERANS POE
9
OOS 0.0%
7.IH-0610 IN HARRIS CO. (0-37)
8
OOS 0.0%
8.IH-0820 IN TARRANT CO. (0-34)
6
OOS 0.0%
9.SH-0288 IN HARRIS CO. (472-484
6
OOS 0.0%
10.300 MERCURY ST
2
OOS 0.0%

Often Cited Together

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

393.994 co-occurrences393.47E93 co-occurrences393.45B2UV75 co-occurrences396.5B42 co-occurrences396.3A136 co-occurrences396.3A1BOS33 co-occurrences393.53B31 co-occurrences393.1130 co-occurrences393.47A30 co-occurrences393.83G28 co-occurrences

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

Top Carriers Cited

Ranked by frequency • 572 carriers total • Page 1 of 23

Top Carriers with 393.47C Violations

Showing 25 of 572

fmcsa-violations
Top Carriers with 393.47C Violations
#CarrierUSDOT# Violations
#1TRANSPORTES LARMEX SA DE CV24363539
#2TRANSPORTES 4 AMIGOS S DE RL DE CV39714676
#3HUGO EDUVILIO AYALA ORTEGA24150256
#4JOSE ALONSO SARMIENTO TORRES22899926
#5ADRIAN IVES PORTALES AGUILAR24563896
#6GUDELIO GUAJARDO RICHARTE29871616
#7MOVENTUM TRANSFER SA DE CV36302796
#8TRANSPORTES DE CARGA SAUL SALINAS SA DE CV5576765
#9CESAR UBALDO MARTINEZ ORTEGA40451265
#10TRANSPORTES DRAGON DEL NORTE SA DE CV6345695
#11ISABEL CRISTINA PEREZ GARCIA40700755
#12MARIA HIGINIA TRISTAN MALDONADO17710214
#13MARIO ALBERTO TREJO14194094
#14HECTOR JUAN Y SEVA GARCIA16113884
#15STATEWIDE MATERIALSTRANSPORT LEASING LTD19361574
#16SERGIO VARELA MALDONADO7252264
#17ALFREDO ORTEGA NEVAREZ38687454
#18JESUS MANUEL PARRILLA GARCIA34017684
#19JUAN ROSEMBAUM CONTRERAS40492214
#20EDGAR SANTOS BARBA ENRIQUEZ30086514
#21TRANSPORTES LORO SA DE CV8819254
#22BLAS GARCIA DIAZ30881424
#23SERVICIOS DE FLETES Y MANIOBRAS S DE RL DE CV28275304
#24SERVICIO INTERNACIONAL DE ENLACE TERRESTRE SA DE CV8181753
#25OPERADORA DE TRANSPORTE INTERNACIONAL SA DE CV6834283

Recent Inspections

Latest inspections where 393.47C was cited • 811 total events • Page 1 of 33

Recent Inspections with 393.47C

Showing 25 of 811

fmcsa-inspections
Recent Inspections with 393.47C
DateReport #StateLevelOOS
Apr 1, 202687487477TXLevel 1No
Apr 1, 202687487240TXLevel 2No
Apr 1, 202687487378TXLevel 1No
Mar 31, 202687479175TXLevel 2Yes
Mar 30, 202687467984TXLevel 1No
Mar 30, 202687467171TXLevel 1No
Mar 30, 202687467969TXLevel 1No
Mar 27, 202687443014TXLevel 1No
Mar 27, 202687466368TXLevel 1No
Mar 26, 202687466531TXLevel 1No
Mar 26, 202687441049TXLevel 1No
Mar 26, 202687442721TXLevel 1No
Mar 26, 202687442949TXLevel 1No
Mar 26, 202687488266TXLevel 1No
Mar 24, 202687441845TXLevel 1No
Mar 24, 202687466204TXLevel 1No
Mar 23, 202687466868TXLevel 1No
Mar 23, 202687423948TXLevel 1No
Mar 23, 202687423429TXLevel 1No
Mar 21, 202687384648TXLevel 2No
Mar 20, 202687422841TXLevel 1No
Mar 19, 202687373834TXLevel 1No
Mar 19, 202687398151TXLevel 1No
Mar 18, 202687396776TXLevel 1No
Mar 18, 202687385897TXLevel 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
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