Airgas Nitrogen Services Llc is an active interstate carrier based in Mcalester, OK.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 27 | 25 | 0 |
| Tractors | 32 | 61 | 0 |
| Trailers | 21 | 0 | 0 |
| Total Power Units | 305 | ||
Distinct vehicles · 24 mo
vs 305 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category | Insp w/ Viol |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 35% | 91% | Around peer average |
| HOS Compliance | 57% | 95% | Around peer average |
| Driver Fitness | 0% | 0% | Better than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 35% | 84% | Around peer average |
Lower percentile = lower SMS measure = stronger safety record. Computed nightly across active carriers in the same state and fleet-size band.
| Type | Inspections | OOS | OOS % | Nat'l Avg |
|---|---|---|---|---|
| Driver | 0 | 1 | — | 6.67% |
| Vehicle | 0 | 8 | — | 22.26% |
| Hazmat | 12 | 0 | 0.00% |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| No crashes recorded | 0 | 0 | 0 | 0 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 32 | 6 | 9 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Sep 17, 2026 | LA | TRUCK TRACTOR | 0 | 0 |
| Sep 11, 2026 | TX | STRAIGHT TRUCK | 0 | 0 |
| Sep 5, 2026 | TX | TRUCK TRACTOR | 0 | 3 |
| Jul 30, 2026 | TX | STRAIGHT TRUCK | 3 | 1 |
Carriers that share an officer, phone, or email with this DOT.
Shared officer · 7
2 Bro'S Transport Llc
Lebanon, OR
Richard Duncan · also at 7 others
Navrats Inc
Emporia, KS
Richard Duncan · also at 7 others
Richard Duncan
Stone Mountain, GA
Richard Duncan · also at 7 others
Richard Duncan
Russellville, KY
Richard Duncan · also at 7 others
Richard Duncan Trucking
Gracemont, OK
Richard Duncan · also at 7 others
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 1 | 0.02 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 18 | 2.05 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 15 states. Top state TX accounts for 37% of activity. Activity outside home state (OK): 100%.
+10 other states with fewer inspections
| Hazardous Materials Compliance |
| 1 |
| 0 |
| 0 |
| Hours-of-Service Compliance | 1 | 0 | 0 |
| Unsafe Driving | 1 | 0 | 0 |
| Jul 28, 2026 |
| TX |
| TRUCK TRACTOR |
| 0 |
| 0 |
| Jul 17, 2026 | NM | TRUCK TRACTOR | 0 | 0 |
| Jul 16, 2026 | LA | TRUCK TRACTOR | 0 | 0 |
| Jun 20, 2026 | TX | TRUCK TRACTOR | 2 | 0 |
| Jun 11, 2026 | MS | TRUCK TRACTOR | 0 | 0 |
| Jun 6, 2026 | MO | TRUCK TRACTOR | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Jul 30, 2026 | 393110B | Insufficient tiedowns to prevent forward movement for load not blocked by headerboard bulkhead or other cargo | Vehicle Maintenance | Yes |
| Jul 30, 2026 | 39395A4EEUS | Emergency Equipment - Fire Extinguishers - unsecured | Vehicle Maintenance | — |
| Jul 30, 2026 | 3939T | Inoperable tail lamp | Vehicle Maintenance | — |
| Jun 20, 2026 | 393209E | Power steering violations | Vehicle Maintenance | — |
| Jun 20, 2026 | 39395A | No/discharged/unsecured fire extinguisher | Vehicle Maintenance | — |
| May 12, 2026 | 39345DLUV | Brake Connections with Leaks Under Vehicle | Vehicle Maintenance | — |
| Apr 29, 2026 | 39345DLUV | Brake Connections with Leaks Under Vehicle | Vehicle Maintenance | — |
| Apr 29, 2026 | 39347E | Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt | Vehicle Maintenance | — |
| Apr 29, 2026 | 39353B | CMV manufactured after 10/19/94 has an automatic airbrake adjustment system that fails to compensate for wear | Vehicle Maintenance | — |
| Apr 6, 2026 | 39345DB | Air Brake - Audible air leak at a proper connection | Vehicle Maintenance | — |
Richard L Duncan
Union Mills, NC
Richard Duncan · also at 7 others