Equipment unit · VIN-decoded · NHTSA vPIC

2011 Blue Bird BB Conventional

1BAKGCPA5BF281923 · Bus - School Bus · BUS
Carriers run under1
12 mo
Inspections3
all-time
OOS inspections0
of 3
First seenOct 7, 2024
CA
Last seenOct 9, 2025
CA
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1BAKGCPA5BF281923
Make
Blue Bird
Model
BB Conventional
Model year
2011
Body class
Bus - School Bus
Vehicle type
BUS
GVWR
Not decoded
Decoded at
Jul 19, 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
1BA

Deterministic · VIN positions 1–3.

Vehicle descriptor section
KGCPA

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

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
281923

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
BLUE BIRD

Prefix basis · 224 decoded VINs at 100.0% prefix purity.

Model
BB Conventional

Prefix basis · 224 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
2011

Observed directly for this VIN via NHTSA vPIC.

Observed make
BLUE BIRD

Observed directly for this VIN via NHTSA vPIC.

Observed model
BB Conventional

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Bus - School Bus

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
BUS

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 · Oct 7, 2024 – Oct 9, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Oct 9, 2025CAV · Vehicle-only0SAY WHEN TRANSPORTATION LLC 3021720TCA782/AZ
Mar 27, 2025AZI · Full0SAY WHEN TRANSPORTATION LLC 3021720EP10864/CA
Oct 7, 2024CAV · Vehicle-only0SAY WHEN TRANSPORTATION LLC 3021720EP10864/CO
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SAY WHEN TRANSPORTATION LLC3021720Oct 7, 2024Oct 9, 20253CA
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.
TCA782AZSAY WHEN TRANSPORTATION LLCOct 9, 2025Oct 9, 20251
EP10864CASAY WHEN TRANSPORTATION LLCMar 27, 2025Mar 27, 20251
EP10864COSAY WHEN TRANSPORTATION LLCOct 7, 2024Oct 7, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 19, 2026