(a)Where a trade apprentice is unable to complete the full apprenticeship course within the period prescribed in sub-rule (1) or to take the final test owing to illness or other circumstances beyond his control, the establishment concerned shall extend the period of his apprenticeship until he completes the full apprenticeship course and the next test is held if so required by the Apprenticeship Adviser. Similar extension of the period of training may also be allowed in the case of those trade apprentices who having completed the course, fail in the final test. A trade apprentice who fails in the second test shall not be allowed any extension of the period of training;