A firearm certificate may be revoked by the chief officer of police for the area in which the holder resides if—
A shot gun certificate may be revoked by the chief officer of police if he is satisfied that the holder is prohibited by this Act from possessing a shot gun or cannot be permitted to possess a shot gun without danger to the public safety or to the peace.
A person aggrieved by the revocation of a certificate under subsection (1)(a) or (2) of this section may in accordance with section 44 of this Act appeal against the refusal.
Where a certificate is revoked by the chief officer of police under this section, he shall by notice in writing require the holder to surrender the certificate; and it is an offence for the holder to fail to do so within twenty-one days from the date of the notice: