Flight Crew Instrument; Flight Crew Flight Instructor; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Flight Crew Last 90 Days 250; Flight Crew Total 3000; Flight Crew Type 500
Time Pressure
Conflict NMAC; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Took Evasive Action
Human Factors
VFR multi engine training flight with CFI and one student day VFR. HUM Tower was called on the radio in a descent. Both pilots did not observe yellow/black helicopter Aircraft Y in same general direction to HUM airport. Helo took no evasive action and continued straight and level flight path. CFI took evasive action. Helo called HUM Tower after close call; it may have been that the helo was speaking to New Orleans Approach (this is unknown) at time of incident. Aircraft X had been on Tower frequency the entire flight in the vicinity of Class D airspace around HUM. Tower never reported any traffic prior to incident.
Instructor reported an NMAC event during descent for landing.