From the first reference I posted above, Page 9:
2.5.5 Emergency training
Title 14 CFR 135.293 required pilots to undergo an evaluation for IIMC recovery and stated the following in part:
(c) Each competency check given in a rotorcraft must include a demonstration of the pilot's ability to maneuver the rotorcraft solely by reference to instruments. The check must determine the pilot's ability to safely maneuver the rotorcraft into visual meteorological conditions following an inadvertent encounter with instrument meteorological conditions.
Island Express’s Training Manual, Revision 15, Section F, S-76 Maneuvers, listed loss of anti-torque effectiveness, anti-torque failure, and settling with power. Revision 16 dated March 6, 2020, added brownout, whiteout, and or flatlight conditions, unusual attitude recovery, and inadvertent entry to IMC.
The accident pilot was evaluated on unusual attitude recovery and/or inadvertent entry to IMC on:
S-76 Part 135.293 proficiency check June 21, 2019
S-76 EuroSafety International check May 8, 2019
S-76 Part 135.293 proficiency check August 20, 2018
S-76 EuroSafety International check May 18, 2018
S-76 Part 135.293 proficiency check August 18, 2017
S-76 EuroSafety International check May 12, 2017
S-76 Part 135.293 proficiency check January 28, 2016
S-76 Part 135.293 proficiency check December 9, 2014
AS-350 Part 135.293 proficiency check July 31, 2019
A review of training records revealed the accident pilot met the new hire, recurrent ground, air, and check airman, ground and air, and emergency training requirements. A records review did not reveal non-compliance or deficiencies noted by the evaluators.