Look up a carrier / DOT 1915879
USDOT 1915879MAST TRUCKING INC
20% of inspections ended in an out-of-service order.
This describes the roadside inspection record, not an official safety rating. FMCSA issues Satisfactory, Conditional and Unsatisfactory ratings through a separate compliance review, and most carriers have never been rated.
Inspection summary
| Inspections on file | 50 |
|---|---|
| Clean, no violations | 29 |
| Ended out of service | 10 |
| Out-of-service rate | 20.0% |
| Most recent | 2026-08-03 |
Showing the 50 most recent inspections held for this carrier. FMCSA keeps a rolling window, so this is a recent record rather than a lifetime one.
Recent inspections
| Date | State | Level | Violations | Service |
|---|---|---|---|---|
| 2026-08-03 | NM | Walk-around | 0 | In service |
| 2026-07-30 | NM | Driver only | 0 | In service |
| 2026-07-29 | CA | Full | 2 | Out of service |
| 2026-07-23 | CO | Driver only | 0 | In service |
| 2026-07-20 | NM | Driver only | 0 | In service |
| 2026-07-08 | OK | Full | 2 | Out of service |
| 2026-07-02 | NM | Walk-around | 2 | Out of service |
| 2026-06-24 | NM | Walk-around | 0 | In service |
| 2026-06-23 | AZ | Walk-around | 1 | Out of service |
| 2026-06-22 | KS | Walk-around | 3 | Out of service |
| 2026-06-12 | KS | Walk-around | 0 | In service |
| 2026-06-11 | TX | Walk-around | 1 | In service |
| 2026-06-06 | TX | Walk-around | 0 | In service |
| 2026-06-06 | NE | Driver only | 0 | In service |
| 2026-06-04 | KS | Full | 1 | Out of service |
| 2026-05-26 | NM | Walk-around | 0 | In service |
| 2026-05-22 | AZ | Walk-around | 0 | In service |
| 2026-05-15 | NM | Walk-around | 1 | Out of service |
| 2026-05-14 | TX | Full | 0 | In service |
| 2026-05-13 | IA | Full | 7 | Out of service |
| 2026-05-11 | CO | Driver only | 0 | In service |
| 2026-05-04 | NM | Full | 0 | In service |
| 2026-05-03 | NM | Walk-around | 2 | Out of service |
| 2026-04-28 | CO | Full | 3 | Out of service |
| 2026-04-24 | CO | Full | 6 | In service |
Violations found
Every violation recorded across the most recent inspections. An out-of-service violation means the vehicle or driver was ordered off the road at the roadside.
| Code | Violation | Service |
|---|---|---|
| 393.9BRKLAMP | Inoperative Brake Lamps | Out of service |
| 393.45B2 | Brake hose or tubing chafing and/or kinking | In service |
| 393.45B2 | Brake hose or tubing chafing and/or kinking | In service |
| 393.207F | Air suspension pressure loss | In service |
| 393.47E | Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt | In service |
| 393.47E | Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt | In service |
| 393.53B | CMV manufactured after 10/19/94 has an automatic airbrake adjustment system that fails to compensate for wear | In service |
| 396.3A1BOS | 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 | Out of service |
| 393.9A-LTSI | Lighting - Turn signal - Any inoperative on the rearmost vehicle. | Out of service |
| 393.55C1 | Truck Tractor manufactured on or after March 1, 1997 not equipped with an antilock brake system | In service |
| 392.2-SLLTL | State/Local Laws - Misc. traffic law violation | In service |
| 393.45B2-B-VAC | Brake - Vacuum hose(s) or line(s) restricted/abraded/chafed through outer cover-to-cord ply crimped/cracked/broken | Out of service |
| 392.8-D | Driver - Failed to inspect /use emergency equipment | In service |
| 393.75A3-TAOLTIS | Tires - All others, leaking in tread area and inflation less than 50% of the maximum inflation pressure on tire equipped with ATIS | Out of service |
| 393.70B1I-CDSLI-MT25 | Coupling - Slider latching fasteners - More than 25% ineffective on either side. | Out of service |
| 393.9A-LSLIWR | Lighting - Stop lamps - Both inoperative when required to be on | Out of service |
| 393.45D-B | Air Brake - Audible air leak at a proper connection | In service |
| 393.9A-LSLIWR | Lighting - Stop lamps - Both inoperative when required to be on | Out of service |
| 393.75A3-TAOL | Tires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | Out of service |
| 393.48A-BIBD | Drum Brake - Inoperative other than a steering axle | In service |
Source: FMCSA Company Census, Vehicle Inspection File and Inspections and Violations, via data.transportation.gov. Refreshed daily. Verify against FMCSA directly before relying on any of this to tender a load.