This subchapter applies to - (1) a removal; (2) a suspension for more than 14 days; (3) a reduction in grade; (4) a reduction in pay; and (5) a furlough of 30 days or less; but does not apply to - (A) a suspension or removal under section 7532 of this title, (B) a reduction-in-force action under section 3502 of this title, (C) the reduction in grade of a supervisor or manager who has not completed the probationary period under section 3321(a)(2) of this title if such reduction is to the grade held immediately before becoming such a supervisor or manager, (D) a reduction in grade or removal under section 4303 of this title, or (E) an action initiated under section 1215 or 7521 of this title.