The use of Hand-held fire extinguishers containing Halon in Aircraft will become prohibited end of 2025 and you will need to replace all them.
Interior cabin configuration - general floor plan (20 passenger configuration).
Main cabin seat installations(including divan and seat belts).
17-passenger interior arrangement and smoke detector.
Installation of a cabin auxiliary heater system (electric), ground use only.
Increase seating capacity on aft baggage shelf for a total of 7 occupants.
Installation of 14 place executive interior.