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.

Installation of a cabin air conditioner system.

Installation of under seat storage container in accordance with Southern Research & Development Drawing No. CA-3000, Revision No. 1 dated April 14, 1982, or later FAA approved revisions.

Modify two passenger seats to face aft.

Addition of storage drawers under cabin seats.

Installation of cabin door pneumatic spring counterbalance.

Installation of fuel flow/pressure instruments. (W/TSIO-360-MB1)

Installation of a baggage door strut.

Replacement of existing landing and/or taxi light reflector and bulbs with high intensity discharge (HID) lighting systems

Install Cabin Door Ajar Warning System.