Carrier profile · USDOT 432473 · Updated Jul 18, 2026

Stewart Brothers Drilling Co

31 power unitsavg 13.4 yrLocal · 2 statesMILAN, NM62/100

AUTHORITY STATUS UNKNOWNRATED SATISFACTORY

Safety

Roadside out-of-service rates versus the national benchmark, inspection and crash trends, decoded violation themes, and ELD / hours-of-service integrity — the full safety picture behind the verdict.

Out-of-service rate· 24-mo cumulative · vs national

Vehicle OOS 58.3%24-mo cumulative

050%nat'l 22.26%

Driver OOS 15.4%24-mo cumulative

030%nat'l 6.67%

Every inspection in the window pooled — 12 vehicle and 13 driver inspections over 24 months.

Vehicle OOS rate· vehicle OOS · vehicle-level inspections · 6-month trailing

57.1% · latest 6-mo window▲ Rising

Share of vehicle-level roadside inspections in each trailing six-month window that resulted in a vehicle out-of-service order. Trending up 21.7 pts across the window. The national vehicle benchmark uses the same metric and is shown on the chart.

Roadside inspection history· 24 charted calendar months · vehicle / driver level · any-OOS overlay

13 inspections in the charted months · busiest month Sep '24 · 4

Vehicle-levelDriver-levelAny OOS

Monthly FMCSA roadside inspections across the 24 charted calendar months. Bars show level-qualified vehicle and driver populations; one inspection can qualify for both. The line shows inspections with any out-of-service result.

Inspection coverage· expected vs observed · the fraud signal

Inspection coverage

How heavily FMCSA inspects this fleet for its size — it tells you how much to trust the safety signals above. Thin coverage on a young authority is a fraud signal nobody else surfaces.

Thin coverage

Under-inspected

Expected

Well-monitored

Heavily inspected

≈0.2 / unit·yr

thin signalabundant signal

Few roadside inspections for a 31-unit fleet — the out-of-service and violation signals above rest on a small sample, so weight them cautiously. Thin coverage on a young authority is itself a flag.

Registered power units: 31
Inspections · 24 mo: 13
Annualized: ≈7 / yr
Coverage: ≈0.2 inspections / unit · yr

BASIC categories· CSA SMS · Aug 2026

Unsafe Driving

0violations

clean · per-BASIC

21%

Hours-of-Service

Vektor peer est.

66%

Driver Fitness

Vektor peer est.

Controlled Substances

0violations

clean · per-BASIC

74%

Vehicle Maintenance

Vektor peer est.

Percentile = standing among same-exposure peers (higher = worse). FMCSA publishes percentiles for only some carriers (shown official); elsewhere we show a Vektor peer-percentile estimate, or the absolute SMS measure when there are too few inspections to rank.

Violation themes· decoded · grouped by BASIC

What this carrier actually gets cited for — FMCSA violation codes decoded into plain English, ranked by frequency.

393.9 Inoperative required lampsVehicle Maintenance14 · 7 OOS
393.47 Brake actuators / linings / componentsVehicle Maintenance10 · 0 OOS
396.3 Inspection / repair / maintenance not performedVehicle Maintenance6 · 6 OOS
393.78 Windshield wipersVehicle Maintenance4 · 0 OOS
393.75 Tires (defective / underinflated / worn)Vehicle Maintenance4 · 4 OOS
396.5 Oil and/or grease leakVehicle Maintenance2 · 0 OOS
392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving2 · 0 OOS
392.9 Failure to secure load / cargo not securedUnsafe Driving2 · 2 OOS
393.30 Parts & accessories (vehicle condition)Vehicle Maintenance2 · 0 OOS
393.51 Brake warning devicesVehicle Maintenance2 · 0 OOS

ELD & hours-of-service

2 hours-of-service / ELD violations on record · most recent Apr 2, 2025. FMCSA does not publish the ELD device brand; these are the carrier's logging-compliance signals.

0ELD device issues

1No log / no ELD

0False logs

0Drove over hours

Crash history· 15 total · 1 in 24 mo

Total crashes

In last 24 mo

Fatal

Injury

Year	Crashes	Fatal	Injury	Tow
2024	1	0	0	1
2021	2	1	1	2
2020	1	0	1	1
2017	1	0	0	1
2016	3	0	2	3
2013	1	0	0	1
2012	1	0	1	1
2009	1	0	1	1
2008	1	0	0	1
2005	1	0	0	1
2004	1	0	1	1
2002	1	0	0	1

Date	State	Fatalities	Injuries	Tow-away
Sep 25, 2024	AZ	0	0	Yes
Oct 18, 2021	NM	0	0	Yes
Sep 10, 2021	AZ	1	1	Yes
Jan 9, 2020	NM	0	1	Yes
Apr 1, 2017	AZ	0	0	Yes
Nov 15, 2016	NM	0	1	Yes
Apr 18, 2016	CA	0	1	Yes
Mar 12, 2016	AZ	0	0	Yes
Jan 31, 2013	NM	0	0	Yes
Sep 13, 2012	NM	0	1	Yes
Mar 24, 2009	OK	0	2	Yes
Jul 15, 2008	UT	0	0	Yes
Sep 28, 2005	UT	0	0	Yes
Oct 25, 2004	CO	0	1	Yes
Feb 28, 2002	WY	0	0	Yes