A foreign equity restriction in the licensing of internal and international air services prohibits the issuance of a license unless the applicant satisfies the Authority that at least fifty-one percent of the voting rights are ultimately held by the State, a citizen of Kenya, or both, and that the aircraft used meets specified registration and operational standards.
"2. In these Regulations, unless the context otherwise requires— [...]
"internal air service" means an air service operated within Kenya, and includes an air service which may pass through the airspace of another state without providing air service in that other state; 
"international air service" means an air service provided between Kenya and at least one other state and excludes an air service which may pass through the airspace of another state without providing air service in that other state; 
[...]
PART II—LICENSING OF INTERNAL AIR SERVICES
3. A person shall not use an aircraft within Kenya for the provision of any air service except under and in accordance with the terms and conditions of a licence issued by the Authority under these Regulations. Operating without a licence is prohibited.
[...]
4.(1) A person who— Application for a licence under this Part.
(a) intends to provide any air service;
(b) intends to renew a licence for an existing air service;
(c) intends to vary the terms or conditions specified on the licence; or
[...]
5. (1) A licence may be issued for any category of air service and aircraft as set out in the First and the Third Schedules respectively if the applicant satisfies the Authority that— Issuance of licence under this Part.
(a) the applicant is a citizen of Kenya; or
(b) in the case of a body corporate or a partnership, at least fifty one (51%) per cent of the voting rights are ultimately held by the State, a citizen of Kenya or both: Provided that the Authority may exempt any person from the requirements of this provision having regard to the special nature of the air service;
(c) the aircraft which will be used in operating the air service is a Kenyan registered aircraft: Provided that the Authority may after considering the application, accept such other foreign registered aircraft subject to the aircraft meeting the operational and technical standards in force in Kenya;
(d) the applicant has met the requirements of Regulations 19, 20 and 47;
(e) the applicant is able to meet the requirements of the Authority for an air operator's certificate for the category of service and aircraft as those set out in the First and Third schedules; and
(f) the applicant meets the requirements of any law relating to aviation safety and security, public health, environmental protection and business operations in general.
(2) For the purpose of this regulation "special nature of the air service" shall include service in the interest of social welfare, charity, for purposes of salvage on humanitarian grounds or of assistance in saving life or in the public interest [...]" (Civil Aviation (Licensing of Air Services) Regulations, 2018)
[...]
PART III—LICENSING OF INTERNATIONAL AIR SERVICES  
10. A person shall not use an aircraft for the provision of any air service, to, from or in transit through Kenya, except under and in accordance with the terms and conditions of a licence issued by the Authority under these Regulations.
[...]
12.  A  licence may be issued for any category of air service or aircraft as set out in the First and Third Schedules respectively, if the applicant satisfies the Authority that— 
(a)   the applicant is a citizen of Kenya; or   
 (b) in the case of a body corporate or a partnership, fifty one (51%) per cent of the voting rights are ultimately held by the State, a citizen of Kenya or both:  
Provided that for the purposes of this regulation, the Authority may accept any applicant  eligible under a criterion set out in any multilateral agreement or arrangement to which Kenya is signatory; 
[...]
FIRST SCHEDULE (rr.4,5,11,12,29&37) CATEGORIES OF AIR SERVICE 
Part A - Scheduled Air Service  [international and domestic] [...]
Part B - Non-Scheduled Air Services (Return flights)  [International  and domestic]
Part C - Aerial Work Services (Domestic/International) 
Part D - Flying instruction  
Part E - Recreational Flying
[...]
THIRD  SCHEDULE (rr.5,12&37) CATEGORIES OF AIRCRAFT 
Part A - Aircraft (fixed wing)
Category  1 (LIGHT)   2 (MEDIUM LIGHT)   3 (MEDIUM)  [...]
Part B – Helicopter Category 5 
 Part C - Balloons Category 6 [...]" (Legal Notice No. 167 - The Civil Aviation (Licensing of Air Services) Regulations, 2018)

Legal Notice No. 167 - The Civil Aviation (Licensing of Air Services) Regulations, 2018
[<a href="https://kcaa.or.ke/sites/default/files/regulation/Legal_Notice_No_167.pdf">Act</a>]