Equipment unit · VIN-decoded · NHTSA vPIC

1989 Mack RW

1M2AY10Y0KM004436 · Truck-Tractor · INCOMPLETE VEHICLE
Carriers run under1
28 mo
Inspections3
all-time
OOS inspections0
of 3
First seenApr 10, 2024
ME
Last seenAug 13, 2026
ME
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1M2AY10Y0KM004436
Make
Mack
Model
RW
Model year
1989
Body class
Truck-Tractor
Vehicle type
INCOMPLETE VEHICLE
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Aug 16, 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
1M2

Deterministic · VIN positions 1–3.

Vehicle descriptor section
AY10Y

Deterministic · VIN positions 4–8.

Check digit
0 · valid

Deterministic · position 9; calculated value 0.

Model year candidates
1989 or 2019

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

North American serial sequence
004436

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
MACK

Prefix basis · 5 decoded VINs at 100.0% prefix purity.

Model
RW

Prefix basis · 5 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
1989

Observed directly for this VIN via NHTSA vPIC.

Observed make
MACK

Observed directly for this VIN via NHTSA vPIC.

Observed model
RW

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck-Tractor

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
INCOMPLETE VEHICLE

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 8: 33,001 lb and above (14,969 kg and above)

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 · Apr 10, 2024 – Aug 13, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 13, 2026MEII · Walk-around0M&H LOGGING LLC 456376960262/ME
Jun 23, 2026MEII · Walk-around0M&H LOGGING LLC 456376960262/ME
Apr 10, 2024MEII · Walk-around0M&H LOGGING LLC 456376960262/ME
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
M&H LOGGING LLC456376Apr 10, 2024Aug 13, 20263ME
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.
960262ME1M&H LOGGING LLCApr 10, 2024Aug 13, 20263
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 16, 2026