Equipment unit · VIN-decoded · NHTSA vPIC

2015 Heil Trailer International

5HTAB4421F7H81000 · Trailer · TRAILER
Carriers run under1
23 mo
Inspections5
all-time
OOS inspections0
of 5
First seenMay 29, 2024
AL
Last seenApr 9, 2026
AL
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
5HTAB4421F7H81000
Make
Heil Trailer International
Model
Not decoded
Model year
2015
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 1, 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
5HT

Deterministic · VIN positions 1–3.

Vehicle descriptor section
AB442

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1985 or 2015

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

North American serial sequence
H81000

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
HEIL TRAILER INTERNATIONAL

Prefix basis · 605 decoded VINs at 100.0% prefix purity.

Model
Heil Trailer International

Prefix basis · 605 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
2015

Observed directly for this VIN via NHTSA vPIC.

Observed make
HEIL TRAILER INTERNATIONAL

Observed directly for this VIN via NHTSA vPIC.

Observed model
Not established

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Trailer

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 · May 29, 2024 – Apr 9, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 9, 2026ALII · Walk-around3AZIZ OIL INC 313662525C1CRU/AL
Sep 19, 2025ALII · Walk-around0AZIZ OIL INC 313662525C0NRR/AL
Nov 6, 2024ALII · Walk-around2AZIZ OIL INC 313662525AA6PP/AL
Jun 10, 2024ALII · Walk-around2AZIZ OIL INC 313662525AA6PP/AL
May 29, 2024ALII · Walk-around2AZIZ OIL INC 313662525AA6PP/AL
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
AZIZ OIL INC3136625May 29, 2024Apr 9, 20265AL
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.
25C1CRUALAZIZ OIL INCApr 9, 2026Apr 9, 20261
25C0NRRALAZIZ OIL INCSep 19, 2025Sep 19, 20251
25AA6PPALAZIZ OIL INCMay 29, 2024Nov 6, 20243
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 1, 2026