Equipment unit · VIN-decoded · NHTSA vPIC

2001 Aspen Trailer Company Ltd.

2A9JT50351S037021 · TRAILER
Carriers run under3
27 mo
Inspections6
all-time
OOS inspections2
of 6
First seenAug 22, 2023
IN
Last seenNov 3, 2025
MO
Inspected under 3 different carriers in 27 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

VIN
2A9JT50351S037021
Make
Aspen Trailer Company Ltd.
Model
Not decoded
Model year
2001
Body class
Not decoded
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 25, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
Decode evidence & sources

Deterministic structure

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

World manufacturer identifier
2A9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
JT503

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

Model year candidates
2001 or 2031

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

North American serial sequence
037021

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
ASPEN CUSTOM TRAILERS

Prefix basis · 12 decoded VINs at 100.0% prefix purity.

Model
ASPEN CUSTOM TRAILERS

Prefix basis · 12 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.

Federal observation (NHTSA vPIC)

What the federal corpus observed directly for this exact VIN — independent of, and sometimes more specific than, the prefix-level inference above.

Observed model year
2001

Observed directly for this VIN via NHTSA vPIC.

Observed make
ASPEN TRAILER COMPANY LTD.

Observed directly for this VIN via NHTSA vPIC.

Observed model
Not established

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Not established

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRAILER

Observed directly for this VIN via NHTSA vPIC.

GVWR
Not established

Observed directly for this VIN via NHTSA vPIC.

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 · Aug 22, 2023 – Nov 3, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Nov 3, 2025MOII · Walk-around7OOST C M SPECIALIZED LLC 7795014US4089/CA
Aug 8, 2024MOII · Walk-around0HW FARREN LLC 23900174US4089/CA
Feb 29, 2024INII · Walk-around3OOSHW FARREN LLC 23900174US4089/CA
Sep 15, 2023NYI · Full11WIND ENERGY TRANSPORT LLC 31818004US4089/CA
Sep 7, 2023PAI · Full2WIND ENERGY TRANSPORT LLC 31818004US4089/CA
Aug 22, 2023INII · Walk-around0WIND ENERGY TRANSPORT LLC 31818004US4089/CA
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
T C M SPECIALIZED LLC779501Nov 3, 2025Nov 3, 20251MI
HW FARREN LLC2390017Feb 29, 2024Aug 8, 20242NJ
WIND ENERGY TRANSPORT LLC3181800Aug 22, 2023Sep 15, 20233CA
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.
4US4089CAT C M SPECIALIZED LLCNov 3, 2025Nov 3, 20251
4US4089CAHW FARREN LLCFeb 29, 2024Aug 8, 20242
4US4089CAWIND ENERGY TRANSPORT LLCAug 22, 2023Sep 15, 20233
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 25, 2026