NCCCO mobile crane recertification: the 12-month window, written exams and the 1,000-hour attestation

Who recertifies and when

✓ Every five years. The candidate handbook (printed page 1) sets a five-year certification period.

✓ Within the 12 months before your expiration date. The handbook says all recertification requirements must be completed in that window. If you finish inside it, your new five-year period runs from your old expiration date, whatever day you tested. If you recertify more than 12 months early, the new period starts when you complete the requirements, so the early months are lost.

✓ One date for every designation. All your Mobile Crane Operator designations share one expiration date. A crane type you add later expires with the others. The handbook says a designation added in the last 24 months of the period does not need recertifying at that five-year mark.

The written exams

✓ NCCCO's Mobile Crane Operator recertification page says the written exams required for recertification are identical to the exams required for initial certification: a Core exam plus specialty exams. Its exam fee page says the same. The handbook lists the formats on printed pages 2 to 4:

• ✓ Core: 95 questions in 90 minutes.
• ✓ Each specialty (LAT, TLL, TSS): 28 questions in 60 minutes.

NCCCO's How to Recertify page asks you to pass "the applicable exam(s)". Neither it nor the handbook spells out whether you retake one specialty or one for each designation you hold. Confirm the exams for your designations with NCCCO when you apply.

✓ CCO's mobile crane certification brochure describes written exams scheduled as Online Proctored Testing on your own computer or at a test site. It does not single out recertification, so confirm the options for your own designations with CCO when you schedule. The testing locations guide has the detail and the brochure link.

The practical exam and the 1,000-hour attestation

✓ The handbook (printed page 1) says you do not need to retake the practical exam if you can attest to at least 1,000 hours of crane-related experience during your certification period. Crane-related experience means operating, maintaining, inspecting or training on cranes. NCCCO's recertification page states the same rule.

If you cannot make that attestation, you take the practical exam again. ✓ Any practical exam you need must be passed before your certification expires.

✓ Service Truck Cranes (STC) sets a lower figure: 500 hours of crane-related experience (handbook, printed page 10).

If your certification expires

✓ The handbook (printed pages 1 and 10) says there is no grace period. If your certification lapses, you must pass both the written and the practical exams again to become certified.

What recertification costs

✓ The handbook sends candidates to NCCCO's exam fee page rather than printing fees. That page listed these fees, effective 1 January 2024, when we read it on 20 Oct 2026:

• ✓ Core written exam: $140.
• ✓ Each written specialty (LAT, TLL or TSS): $80.
• ✓ Each corresponding practical exam: $70 in CCO fees.

The fee page and NCCCO's other fees page list no separate recertification fee. Core plus one specialty comes to $220 (our arithmetic); the NCCCO certification cost calculator adds your own prep, travel and retakes to that, and the crane operator certification cost guide shows the full cost of the route and who usually pays. Test-site, crane-use and training charges are separate. The written test cost guide covers the fees and the four-week retake rule, which NCCCO applies to recertification candidates too.

Other requirements

✓ Recertification candidates must comply with CCO's Substance Abuse Policy and Code of Ethics (handbook, printed page 1). Check the current handbook for anything else that applies to you, including any medical requirement from your employer or jurisdiction. The certification requirements guide explains how the credential differs from employer evaluation.

What Boom Angle covers for recertification

Because the recertification written exams are the same exams, the same outlines apply. Here is what our practice covers today:

• Core: covered. The free NCCCO practice test, the free 10-question check and the question bank follow the Core written outline.
• LAT, TLL and TSS: covered through the specialty outline they share, with simplified practice load charts that are clearly labeled and never a manufacturer's chart or one of NCCCO's. We don't have a separate bank for each specialty.
• STC: not covered.
• The practical exam: not covered. It is done on a crane with an examiner.

Load charts are about 27% of the Core outline and about 35% of each specialty, so they are worth a fresh look if it has been five years. The crane load chart guide walks through reading one, and the Core written exam guide covers the domains.

Take the free 10-question check to see your score by Core domain before you book, with no signup.

FAQ

How often do I need to recertify?

Every five years. Complete all the requirements in the 12 months before your expiration date and your new five-year period runs from the old expiration date.

Do I have to retake the practical exam to recertify?

Not if you can attest to at least 1,000 hours of crane-related experience during your certification period, or 500 hours for Service Truck Cranes. Otherwise you take the practical again and must pass it before your certification expires.

Are the recertification written exams different from the first ones?

No. NCCCO says they are identical to the initial exams: Core at 95 questions in 90 minutes, plus specialty exams at 28 questions in 60 minutes each.

Can I take the NCCCO recertification exams online?

CCO's mobile crane brochure describes Online Proctored Testing on your own computer with a live proctor, as well as test-site options for the written exams. It doesn't single out recertification, so confirm the options for your designations with CCO when you schedule.

What happens if my certification expires?

The handbook gives no grace period. You would need to pass both the written and the practical exams again to become certified.

Sources

Show the list

• Mobile Crane Operator Candidate Handbook, CCO, cover revision 01/25, printed pages 1 to 4 and 10. Retrieved 20 Oct 2026.
• Mobile Crane Operator Recertification, NCCCO. Retrieved 20 Oct 2026.
• How to Recertify, NCCCO. Retrieved 20 Oct 2026.
• CCO Exam Fees, NCCCO, fees effective 1 January 2024. Retrieved 20 Oct 2026.
• Other CCO Fees, NCCCO, fees effective 1 January 2024. Retrieved 20 Oct 2026.
• Exam Retake Policy: Frequently Asked Questions, NCCCO. Retrieved 17 Oct 2026.