Aerial Lift Inspection Checklist: Scissor & Boom Lift Guide

ANSI A92.22-2021 defines three parallel inspection tiers for MEWPs (scissor lifts, boom lifts, and other mobile elevating work platforms). First, pre-use inspection: performed by the trained operator before every work cycle, minimum daily. Visual walkaround plus function tests of controls, emergency stops, emergency lowering, guardrails and gates, structural condition, hydraulics for leaks, tyres, and battery/fuel. 10-15 minutes. Second, frequent inspection: performed by a qualified person every 3 months of service or every 150 hours of use, whichever comes first. Also required whenever the machine has been out of service for 3+ months before it re-enters service. Covers structural condition, hydraulic system, safety devices, controls, and power system per manufacturer criteria. Written record retained. Third, annual inspection: performed by a qualified person every 12 months from the date of the last annual inspection. Comprehensive teardown-level evaluation including structural weld inspection, hydraulic load-hold testing, every safety device bench-tested, and full documentation with serial number, findings, corrective actions, and inspector qualification. Each tier is required — not either/or — and each has its own record.

OSHA 29 CFR 1926.453 (construction) and 29 CFR 1910.67 (general industry) require aerial lifts to conform to ANSI A92 design and construction standards, which by reference incorporates ANSI A92.22-2021 inspection requirements. Practically this means three inspection cadences apply to every aerial lift. Pre-use inspection by the operator before every work cycle, at minimum daily — OSHA cites missing or inadequate pre-use records as a frequent finding. Frequent inspection by a qualified person every 3 months of service or every 150 hours of use, whichever comes first, and also required whenever the machine has been out of service for 3+ months. Annual inspection by a qualified person every 12 months from the date of the last annual inspection, with written documentation of serial number, findings, and corrective actions. On scissor lifts specifically, OSHA classifies them under Subpart L (scaffolds) rather than as aerial lifts, but the inspection framework is functionally identical because ANSI A92.22 applies to both scissor and boom lifts. State OSHA plans and some local jurisdictions may add supplementary requirements — always verify against the specific site's regulatory framework.

The qualified person varies by inspection tier. Pre-use inspection: performed by the trained operator. Under ANSI A92.24, the operator must be trained and familiarized on the specific type and model of MEWP they will use, and the training must cover pre-use inspection procedures. Operator training is refreshed every 3 years. Frequent inspection: performed by a "qualified person" as defined in ANSI A92.20 — typically a service technician trained on the specific machine type with documented ability to identify defects and recommend corrective action. This can be an in-house technician who has completed manufacturer training, an authorized dealer technician, or a third-party ANSI-qualified inspector. Annual inspection: performed by a qualified person, typically an OEM-certified service technician, an authorized dealer, or an independent third-party inspector with documented ANSI qualification. The annual is often the tier where in-house capability ends and third-party services begin because it requires the deepest teardown-level evaluation and the most detailed documentation. Regardless of who performs the inspection, the written record must identify the inspector by name and demonstrate qualification.

Under ANSI A92 the two are grouped together as MEWPs (mobile elevating work platforms), and the same three-tier inspection framework (pre-use / frequent / annual) applies to both. ANSI classifies scissor lifts as Group A (platform center stays within chassis perimeter at all times) and boom lifts as Group B (platform can extend beyond chassis perimeter), and the inspection tier requirements are identical. Under OSHA, however, scissor lifts and aerial lifts are classified differently: scissor lifts fall under 29 CFR 1926 Subpart L (scaffolds), while aerial lifts (boom lifts, articulating booms, vehicle-mounted aerial devices) fall under 29 CFR 1926.453 (aerial lifts). The practical difference: on aerial lifts (boom), operators must be tied off to a platform anchor with a fall-arrest lanyard during operation regardless of guardrail condition; on scissor lifts, harness attachment is not required by OSHA if the guardrails are intact and properly configured, though site policy or manufacturer directive can override to require harnesses. Both machine types require the full ANSI A92.22 three-tier inspection cadence.

Yes, in addition to any manufacturer or ANSI-derived inspection routine. In Great Britain, MEWPs used to lift people fall under the Lifting Operations and Lifting Equipment Regulations 1998 (LOLER). LOLER Regulation 9 requires a thorough examination by a competent person every 6 months for any lifting equipment used to lift people, and MEWPs (scissor lifts, boom lifts, vertical mast lifts, articulated booms with work platforms) all fall in that category. This is on top of the daily operator pre-use inspection and does not replace the manufacturer's service schedule. The examination is documented in a written report under Schedule 1 of the regulations, categorising defects as Cat A (immediate danger, reportable to HSE), Cat B (requiring timescaled repair), or Cat C (observation). PUWER also applies to MEWPs as work equipment, adding general maintenance and inspection obligations. Multi-jurisdictional fleets that operate the same MEWP model across US and UK sites need per-jurisdiction inspection schedules attached to each asset — a machine that meets ANSI A92.22 annual requirements is not automatically LOLER-compliant on a UK site.