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.
FAA Approved (STC) NVIS Aircraft Lighting Modification for PC-12/47 to include exterior high intensity LED navigation lights and aft cabin lighting.
SA02683SE and Public Use
Fixed-wing or Rotorcraft: Single Engine Fixed Wing Land
Pilatus Aircraft Ltd. PC-12/47
Night Vision Imaging System (NVIS) modifications are required to maximize visual acuity and safety while operating an aircraft with night vision goggles (NVGs). ASU offers nearly 40 STCs covering more than 80 makes and models of rotary and fixed-wing aircraft.
RVSM (FAA STC SA01253WI-D issue dated 20/02/2007) EASA.IM.A.S.01671 FAA STC SA01253WI-D
Single or Dual Altimeters (FAA STC SA01116WI-D) EASA.IM.A.S.01670 FAA STC SA01116WI-D
Installation of Honeywell EGPWS MK VI by installing a Honeywell EGPWS MK-VI. EASA.A.S.03545
Installation of AIRCELL SATCOM ST3100 EASA.A.S.03513
Replacement of existing KX 165 COM / NAV, KLN 90B GPS, and GTX 330D Mode S Transponder installation by GNS480 COM / NAV/ GPS and GTX 33D Mode S Transponder installation. EASA.A.S.03512
Installation of emergency power system.
Installation of Patent Loading and Utility System.
Modification of Rockwell Collins, Inc. VHF-4000 and VHF-4000E installations