On mixed UK sites the “360 slew telehandler” and the standard telehandler get used side by side, and it’s easy to blur the line between them. Under CPCS, that line is the split between A77 (Telehandler 360 Slew) and A17D (Telescopic Handler – all sizes excluding 360 slew). They feel related, but day-to-day they behave, set up and are supervised quite differently. Getting the category wrong can put the job, the lift and people at risk, and it will land you in trouble at the gate or at assessment.
TL;DR
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– A17D is a conventional telehandler; A77 is a rotating “roto” telehandler with crane-like behaviour.
– A77 work involves stabilisers, duty charts and bigger exclusion zones; it needs tighter lift planning.
– Banksman/signaller, clear comms and ground bearing checks matter more on 360 slew.
– Cards aren’t interchangeable; site authorisation and familiarisation still apply for each machine.
– Suspended loads need specific competence and a safe system of work whichever category you hold.
What a 360 slew telehandler really is, versus a standard telehandler
/> An A17D machine is a conventional telehandler: fixed upper structure, no continuous turret slew, steering and placing mainly by travelling and booming out. You lift with forks or approved attachments, set down by manoeuvring the chassis, and keep within the load chart limits for the boom.
An A77 machine is a different animal. The upper structure slews 360 degrees on a turret, and most have stabilisers and sometimes a winch or jib. You’re now managing duty charts, ground bearing pressures, radius and slewing loads in a way that’s much closer to crane practice. Even when working on forks, the planning assumptions change: exclusion zones grow, people movement around the turret matters, and the banksman’s role becomes non-negotiable.
Competence under CPCS: cards, add-ons and site expectations
/> A17D proves competence with standard telehandlers, all sizes, excluding 360 slew. A77 is a dedicated category for rotating telehandlers. Holding one doesn’t automatically cover the other in the eyes of most principal contractors, who still expect machine-specific familiarisation and clear authorisation before use. Site management should check cards and experience, then brief operators on local controls, attachments and safe routes.
Suspended loads are a hot spot. Many A17D fleets add a hook or jib, but that doesn’t sidestep the need for the right training, supervision and a written safe system of work. With A77, the presence of a winch or more crane-like duty doesn’t remove the need for planning, a signaller and a competent person to set limits. In both cases, the operator must be able to interpret load/duty charts, recognise wind and radius effects, and work only within what the plan and the machine allow.
Day-to-day differences that change how you work
/> Set-up is where A77 diverges quickest. Stabilisers must go on appropriately verified ground, with mats if needed, and the duty chart must reflect the chosen configuration. Slew radius dictates a wider exclusion zone, with barriers and a banksman to stop people wandering into the arc. You’ll often work more statically, slewing to place, rather than shuffling the chassis.
With A17D, productivity comes from clean routes, good segregation and accurate fork work. You still need a banksman for tight spots and any reversing, but your main variables are reach, boom angle and ground conditions. On A77, wind, out-of-level set-up and swing-through all bite harder. Travel mode differs too: some rotes are less friendly over rough ground, and you may be limited in pick-and-carry. Attachment management matters across both: forks, jibs and platforms should be on a register with in-date inspections and the operator familiar with the control changes each brings.
Scenario: 360 slew on a tight city centre frame
/> A city centre RC frame job is running late, with scaffold lifts waiting on three elevations. The roto telehandler is positioned in a loading bay between hoarding and a live footpath. Wind has picked up after lunch and the ground is damp from overnight rain. The banksman is juggling deliveries and walks away to deal with a wagon at the gate. The operator levels the machine but doesn’t check the ground mats have sunk slightly at one outrigger. He slews to place a pallet of rebar and feels the machine go light as the load passes over the corner. He stops, lowers slowly and calls the supervisor. A five-minute pause to re-pack the outrigger and re-set the exclusion zone would have avoided a near-miss and a half-hour stoppage.
Checklist: stepping up from A17D to A77 safely
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– Confirm authorisation: card category checked, familiarisation recorded, attachments understood.
– Read the duty chart before you set up; note stabiliser configuration, radius limits and wind guidance.
– Verify ground bearing: use mats where needed, check for voids, services and edges.
– Establish and maintain an exclusion zone that follows the slew arc; use barriers and a banksman.
– Agree signals and radios with the signaller; test them before lifting.
– Keep load path high, slow and predictable; never slew over unprotected people or traffic routes.
– Stand down if wind, level or ground conditions drift from the plan; escalate early.
# Common mistakes
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– Treating a 360 slew like a big telehandler on wheels. It behaves like a small crane once the turret is working, and needs the same discipline.
– Ignoring ground conditions under stabilisers. Soft spots or service trenches don’t forgive a rotating upper under load.
– Poor communication during slew. A signaller out of position or unclear signals lead to uncontrolled movement near people.
– Skipping attachment checks. A winch, jib or forks with damaged pins or wrong settings change the whole lift risk.
What good practice looks like on mixed fleets
/> Supervisors should plan who does what: A17D on the runs, A77 on static placements where a crane isn’t viable. Lift plans don’t need to be novels, but they must set out configuration, limits, communication, routes and hold points. Banksmen should control interfaces with other trades, keep pedestrian routes off the slew arc, and stand where they can be seen. Operators should complete pre-use checks with extra attention to slew rings, stabilisers, locking pins, load indicators and attachment condition, recording defects and isolating the machine if anything’s off.
Toolbox talks are the glue. Cover wind limits in practical terms, agree radio channels, mark up exclusion zones on the ground, and make it clear that time pressure never overrides the plan. Finally, keep competence live: rotate people through training yards for practice on duty charts and set-ups, and record refreshers before drift sets in.
A77 and A17D are close cousins, but the 360 slew machine brings crane habits to a telehandler badge. If the plan is tight, the ground is marginal or the weather is turning, slow down, reset and call the banksman back in—most problems start when the slew begins without the basics in place.
FAQ
# What’s the practical difference between A77 and A17D?
/> A17D covers conventional telehandlers with no continuous slew, focusing on travelling, placing and stacking. A77 is for rotating telehandlers with a turret and stabilisers, bringing duty charts, slew arcs and ground bearing into play. On site, A77 work looks more like small crane lifting, even on forks, and needs tighter exclusion zones and supervision.
# Do I need extra proof for suspended loads on these machines?
/> Yes, lifting a suspended load calls for specific competence, a signaller and a planned method, regardless of category. Many employers ask for an additional endorsement or evidence of training for suspended loads, along with recent experience. Expect to show you can read the relevant charts, rig correctly and control sway within a safe system of work.
# What do assessors generally look for on an A77 test?
/> Assessors typically expect solid pre-use checks, especially around slew rings, stabilisers, interlocks and indicators. They’ll watch how you read and apply duty charts, set up on suitable ground, establish an exclusion zone and communicate with a signaller. Smooth, controlled movements and stopping the job when conditions change are viewed favourably.
# What are common reasons operators get stood down or fail?
/> Typical reasons include poor ground set-up under stabilisers, misreading the duty chart and working beyond limits. Others are weak communication with the banksman, allowing people into the slew arc, and skipping checks on attachments or locking pins. On assessments, rushing and not explaining your thinking can also count against you.
# When should refresher or update training happen?
/> Refresher is sensible when your card is nearing renewal, after a long period off the controls, or when changing machine type or attachments. Many contractors expect periodic updates aligned with company policy and any changes in equipment or procedures. Short, targeted refreshers in a training yard help prevent competence drift and keep people aligned with current site expectations.
