TruckCodex

393.47D — Brake actuators/chambers defective

FMCSA violation code under Vehicle Maintenance. 1,263 events recorded in roadside inspections. Severity weight: 7.

Severity Weight
7
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
1,263
Code
393.47D
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
7
Violation Group
—
Total Events
1,263
Carriers Cited
935

Violation Description

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

About This Violation Code

Code 393.47D 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 393.47D in the Federal Motor Carrier Safety Regulations.

View on eCFR.gov →FMCSA Violations Search →
Events (all time)
1,263
OOS Events
370
OOS Rate
29.3%
Top State (180d)
Texas
326 events

Top Enforcing States

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

1.Texas
326
OOS 27.3%
2.New Mexico
16
OOS 18.8%
3.Illinois
11
OOS 27.3%
4.North Carolina
11
OOS 27.3%
5.Iowa
8
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 393.47D citations. Red bars mark months with OOS-triggering citations.

50
Apr
61
May
41
Jun
59
Jul
74
Aug
43
Sep
72
Oct
60
Nov
64
Dec
55
Jan
80
Feb
81
Mar

Most Active Stations

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

1.US77 RIVIERA SCALE
21
OOS 19.0%
2.IH-0030 IN DALLAS CO. (32-64)
19
OOS 26.3%
3.PHARR POE
16
OOS 18.8%
4.SH-0225 IN HARRIS CO. (686-700
14
OOS 35.7%
5.COLUMBIA POE
13
OOS 7.7%
6.SH-0289 IN COLLIN CO. (228-254
10
OOS 60.0%
7.US380 DECATUR SCALE
10
OOS 10.0%
8.IH45 NB NEW WAVERLY SCALE
9
OOS 11.1%
9.IH35 SB DEVINE SCALE
8
OOS 0.0%
10.US281 SB FALFURRIAS SCALE
8
OOS 37.5%

Often Cited Together

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

393.47E93 co-occurrences393.980 co-occurrences396.3A1BOS80 co-occurrences393.48A73 co-occurrences393.45B2UV70 co-occurrences393.53B54 co-occurrences396.3A152 co-occurrences396.5B50 co-occurrences393.7841 co-occurrences392.2RG38 co-occurrences

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

Top Carriers Cited

Ranked by frequency • 935 carriers total • Page 1 of 38

Top Carriers with 393.47D Violations

Showing 25 of 935

fmcsa-violations
Top Carriers with 393.47D Violations
#CarrierUSDOT# Violations
#1JUDGE BROS INC33725716
#2PLATINUM TRUCKING LLC40018296
#3NOVA FREIGHT LLC35096385
#4ARMADA FREIGHT INC36322835
#5JUAN CARLOS FLORES21722944
#6HERITAGE ACRES FARM LLC14808124
#7INTERLOGIX LLC41331704
#8AMS TRANSPORT TRUCKING LLC39939564
#9CENTERPRIME SOLUTIONS INC29753474
#10UMS LOGISTICS INC35031664
#11STATE EXPRESS INC24471124
#12MYRICK MOTOR LINES LLC37064924
#13SB EXPRESS TRANSPORT LLC37011214
#14J SANCHEZ TRUCKING LLC31758524
#15WADE BEASLEY43902804
#16CNC LOGISTICS S DE RL DE CV27262034
#17TEZ TRANS LLC42256654
#18TEXAS - TS TRUCKING INC18670634
#19J B HUNT TRANSPORT INC808064
#20MTZ VACUUM SERVICES LLC23864404
#21ALAMO TRANSIT COMPANY19418984
#22G AND G OPERATORS LTD3470004
#23ANTHONY THOMAS TRUCKING LLC34321724
#24SNIPER TRUCKING LLC42997414
#25ADRIAN ALVAREZ41336604

Recent Inspections

Latest inspections where 393.47D was cited • 1,263 total events • Page 1 of 51

Recent Inspections with 393.47D

Showing 25 of 1,263

fmcsa-inspections
Recent Inspections with 393.47D
DateReport #StateLevelOOS
Mar 31, 202687478970TXLevel 1No
Mar 30, 202687464293NMLevel 1No
Mar 28, 202687466541TXLevel 1No
Mar 27, 202687441179TXLevel 2No
Mar 26, 202687442630TXLevel 1No
Mar 26, 202687443155TXLevel 1No
Mar 26, 202687429224ILLevel 1No
Mar 26, 202687487191TXLevel 1No
Mar 26, 202687468610TXLevel 2No
Mar 26, 202687466748TXLevel 1Yes
Mar 25, 202687410137TXLevel 2No
Mar 24, 202687410187TXLevel 1No
Mar 24, 202687410099TXLevel 1Yes
Mar 24, 202687410756TXLevel 1No
Mar 24, 202687441554TXLevel 2No
Mar 24, 202687410675TXLevel 2No
Mar 24, 202687441359TXLevel 1No
Mar 23, 202687407738NMLevel 1Yes
Mar 23, 202687466249TXLevel 1Yes
Mar 23, 202687423222TXLevel 1No
Mar 23, 202687410391TXLevel 2No
Mar 20, 202687397860TXLevel 1No
Mar 20, 202687467453TXLevel 1No
Mar 20, 202687373933TXLevel 1No
Mar 19, 202687344584TXLevel 2Yes

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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