B Check
This is performed approximately every 4–6 months. It needs about 150 man-hours and is usually performed within 1–3 days at an airport hangar. A similar occurrence schedule applies to the B check as to the A check. B checks may be incorporated into successive A checks, i.e.: A-1 through A-10 complete all the B check items.
Read more about this topic: Aircraft Maintenance Checks
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