14 CFR § 141.87

Must immediately provide the FAA responsible Flight Standards office in which the school is located with written notification of the change;

May conduct training without a chief instructor for that training course for a period not to exceed 60 days while awaiting the designation and approval of another chief instructor;

May, for a period not to exceed 60 days, have the stage checks and end-of-course tests administered by:

The training course's assistant chief instructor, if one has been designated;

The training course's check instructor, if one has been designated;

An FAA inspector; or

An examiner.

Must, after 60 days without a chief instructor, cease operations and surrender its certificate to the Administrator; and

May have its certificate reinstated, upon:

Designating and approving another chief instructor;

Showing it meets the requirements of § 141.27(a)(2) of this part; and

Applying for reinstatement on a form and in a manner prescribed by the Administrator.