Safety Measurement System - Inspection TX72NA9DNC5N (U.S. DOT# 1997264)

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United States Department of Transportation

Working Together for Safety.

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Use of SMS Data/Information

FAST Act of 2015:

Readers should not draw conclusions about a carrier's overall safety condition simply based on the data displayed in this system. Unless a motor carrier has received an UNSATISFACTORY safety rating under part 385 of title 49, Code of Federal Regulations, or has otherwise been ordered to discontinue operations by the Federal Motor Carrier Safety Administration, it is authorized to operate on the Nation's roadways.

Safety Measurement System:

The data in the Safety Measurement System (SMS) is performance data used by the Agency and Enforcement Community. A symbol, based on that data, indicates that FMCSA may prioritize a motor carrier for further monitoring.

The symbol is not intended to imply any federal safety rating of the carrier pursuant to 49 USC 31144. Readers should not draw conclusions about a carrier's overall safety condition simply based on the data displayed in this system. Unless a motor carrier in the SMS has received an UNSATISFACTORY safety rating pursuant to 49 CFR Part 385, or has otherwise been ordered to discontinue operations by the FMCSA, it is authorized to operate on the nation's roadways.

Motor carrier safety ratings are available at http://safer.fmcsa.dot.gov and motor carrier licensing and insurance status are available at http://li-public.fmcsa.dot.gov/.

Detailed Inspection Report as of 3/27/2026

Carrier Information

Carrier Name: Christianson Air Conditioning And Plumbing Llc
U.S. DOT#: 1997264
Carrier Address: 1950 Louis Henna Blvd
Round Rock, TX 78664

Time/Location

Report #: TX72NA9DNC5N
Report State: TX
State: TX
Date: 2/5/2025
Start Time: 1032
End Time: 1111
Level: I. Full
Facility: Roadside
Post Crash Inspection: No
Hazmat Placard Required: No

Vehicle Information

Unit	Type	Make	Plate State	Plate Number	VIN
1	Straight Truck	CHEV	TX	VWG3433	1HTKHPVK7RH751201
2	Semi-Trailer	OTHR	TX	130772H	1V5BA1622X1133070

Carrier Violations

Vio Code	Section	Unit	OOS	Description	Included in SMS	BASIC	Reason Not Included in SMS
393.43D	393.43(d)	2	Yes	No Or Defective Automatic Trailer Brake	Yes	Vehicle Maint.
393.48A	393.48(a)	2	No	Inoperative/Defective Brakes	Yes	Vehicle Maint.
393.48A	393.48(a)	2	No	Inoperative/Defective Brakes	No		Multiple Cites
393.48A	393.48(a)	2	No	Inoperative/Defective Brakes	No		Multiple Cites
393.48A	393.48(a)	2	No	Inoperative/Defective Brakes	No		Multiple Cites
393.9	393.9(a)	1	No	Inoperable Required Lamp	No		Multiple Cites
393.9	393.9(a)	1	No	Inoperable Required Lamp	Yes	Vehicle Maint.
393.9T	393.9(a)	1	No	Inoperable Tail Lamp	Yes	Vehicle Maint.
396.17C	396.17(c)	2	No	Operating A Cmv Without Proof Of A Periodic Inspection	Yes	Vehicle Maint.
396.3A1BOS	396.3(a)(1)	2	Yes	Brakes Out Of Service: The Number Of Defective Brakes Is Equal To Or Greater Than 20 Percent Of The Service Brakes On The Vehicle Or Combination	Yes	Vehicle Maint.