Steinbach & Associates, developer of STCs for R-134a conversions, is at Booth No. N713 showing how its R134a air-conditioning system compressor can replace old R12 Freon coolant compressors. Scott Steinbach, president of the Waco, Texas company, told AIN that since the R12 was phased out of production, a new compressor and accessory components are necessary to use R134a to full advantage.
A contingent of U.S. Air Force flight attendants participated in this year’s NBAA Flight Attendants/Flight Technicians conference, not just to learn from their peers but to share their own experiences using dry ice as a cooling medium to keep food safe on long trips. It turns out that a sufficient quantity of dry ice allows for weeks of operation and proper food storage. There are important safety considerations when using dry ice.
The FAA is issuing an update of advisory circular AC 20-42D: Hand Fire Extinguishers for Use in Aircraft. It provides guidance for firefighting effectiveness, selection, location and mounting of hand fire extinguishers. The circular establishes halocarbons hydrochlorofluorocarbon (HCFC) Blend B, hydrofluorocarbon (HFC)-227ea and HFC-236fa as FAA-approved replacement agents to Halon 1211.
Halon fire-extinguishing agents have been used for many years to protect valuable electronics, oil and gas production facilities, military systems, aircraft and other critical operations. The Army Corps of Engineers developed Halon (short for halogenated hydrocarbons) in 1948 as a less toxic but highly effective alternative to methyl bromide.