Equipment unit · VIN-decoded · NHTSA vPIC

5MASA4821BA020363

Not yet decoded
Carriers run under2
5 mo
Inspections2
all-time
OOS inspections0
of 2
First seenSep 4, 2025
MT
Last seenFeb 26, 2026
WA
Inspected under 2 different carriers in 5 months
A unit that bounces between many operators can indicate slip-seating, heavy sub-haul, or double-brokering. Review the carrier timeline below for load integrity — context for human judgment, not a verdict.
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

This VIN has not been decoded yet — the unit's carrier, inspection and plate history below is reconstructed from the FMCSA inspection feed regardless.

Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
5MA

Deterministic · VIN positions 1–3.

Vehicle descriptor section
SA482

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1981 or 2011

Position 10 repeats every 30 years; both candidates are retained and neither is silently selected.

North American serial sequence
020363

Deterministic · positions 12–17 for a North American WMI.

Sourced platform inference

The prefix store publishes only at support ≥ 3 and purity ≥ 90%. Prefix confidence is shown beside every established platform claim.

Make
MAC TRAILER MANUFACTURING

Prefix basis · 50 decoded VINs at 100.0% prefix purity.

Model
MAC TRAILER MANUFACTURING

Prefix basis · 50 decoded VINs at 100.0% prefix purity.

Model line
Not established

No sourced model-line label is established.

No source established for this field.

Generation
Not established

No sourced generation label is established.

No source established for this field.

Cab type
Not established

No sourced cab label is established.

No source established for this field.

Not established

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Sep 4, 2025 – Feb 26, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Feb 26, 2026WAIII · Driver-only0MONTANA MISC LLC 3169084584367B/MT
Sep 4, 2025MTII · Walk-around2ROCKY MOUNTAIN SUPPLY INC 829988ETN398/MT
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MONTANA MISC LLC3169084Feb 26, 2026Feb 26, 20261MT
ROCKY MOUNTAIN SUPPLY INC829988Sep 4, 2025Sep 4, 20251MT
Names are left-joined from the FMCSA census; a DOT with no census match falls back to its number.
04

Plate & unit-number history

The same truck under different plate registrations across carriers

PlateState / prov.Unit no.CarrierDate rangeInsp.
584367BMTMONTANA MISC LLCFeb 26, 2026Feb 26, 20261
ETN398MTROCKY MOUNTAIN SUPPLY INCSep 4, 2025Sep 4, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC