Step 1 of 5 • 2-3 hours per trailer
Workshop & Trailer
Capture the workshop details and the trailer being inspected. Tick the trailer type(s) below to load the right specialist sections.
1Workshop Profile
2Trailer Details
3Trailer Type (Workshop Adaptation)
Tick all trailer types that apply to this trailer. Type-specific sections will appear in Step 2.
Step 2 of 5 • Standard Checklist
Inspection Checklist
Mark each item PASS, FAIL or N/A. FAIL items can have a note and severity rating.
1
Documents & Identification
Trailer registration matches NATIS
VIN plate legible and matches NATIS
Licence disc displayed and current
Last COF certificate available
Tare and GVM markings legible
2
Tyres
Tread depth ≥ 1mm across full width on each tyre
No cuts, bulges or sidewall damage on any tyre
Matching pattern across same axle
Spare wheel and tyre present and serviceable (where fitted)
Wheel rims free of cracks
3
Brakes
Trailer brake performance ≥ 50% efficiency on roller test
Park brake performance ≥ 16% efficiency
No imbalance between wheels on same axle (>30%)
ABS warning lamp functional
Brake pad/lining thickness above limit on every wheel
Brake adjustment correct on every wheel
4
Lights, Indicators & Reflectors
All required lights present, clean and operational
Indicators flash at correct rate
Brake lights operate correctly via tractor connection
Marker lights all present and functional
Reflectors and chevron markings compliant (red rear, amber side, white front)
5
Coupling
King pin within manufacturer tolerance (gauge measured)
King pin securely mounted to trailer
Landing gear operates smoothly under load
Landing gear safety pin functional
No deformation around fifth wheel coupling area
6
Suspension & Axles
No knocks or play in suspension components
Suspension shackles and bushes serviceable
U-bolts secure and undamaged
Shock absorbers secure (no leaks)
Axles aligned (no dog-tracking evidence)
Air suspension levelling valve correct (where fitted)
7
Body & Structure
Chassis frame inspected — no cracks at stress points
Cross members secure
Subframe integrity verified
All welded joints sound
No corrosion damage to load-bearing structure
8
Air System
Air-lines and couplings free of leaks
Glad-hand seals serviceable
Trailer responds to tractor brake application correctly
Park brake holds trailer on incline
Reservoir drain valves operational
9
Underbody & Mudguards
Mud flaps present and compliant
Side guards present and undamaged where required
Spare wheel carrier serviceable
Number plate secure and legible
10
Safety Equipment
Reflective triangles present (where required)
Wheel chocks present (where required)
Spillage equipment present (HazChem trailers)
99Custom Items Found
Add any items inspected outside the standard checklist — workshop-specific or one-off observations.
Step 3 of 5 • Issues found
Findings & Repairs
Add any defects found during the inspection that require repair work or follow-up.
1Findings Recorded
2Inspector's Notes
Step 4 of 5 • Inspection outcome
Service Outcome
Set the final outcome of this inspection.
1Inspection Outcome
✓
PASS — Trailer Cleared
!
CONDITIONAL — Repairs Needed
✕
FAIL — Trailer Off Road
Step 5 of 5 • Three signatures required
Sign-off & Generate
Mechanic, Workshop Manager, and Responsible Person.
1Mechanic
Signature *
Draw signature with mouse or touch
2Workshop Manager
Signature *
Draw signature with mouse or touch
3Responsible Person (Acceptance)
Signature *
Draw signature with mouse or touch
Summary
4Generate Service Report
Service Report Generated
Your Trailer COF Prep report has been generated and downloaded.
TCP-YYYYMMDD-XXX
File the PDF against the trailer record in the TRI Document Portal.