The FAA issued a draft policy memorandum that would change circuit-breaker layouts in aircraft electrical systems, as well as how pilots deal with tripped circuit breakers. Comments are due by September 12. Principal changes would be for manufacturers to group and identify essential and non-essential circuit breakers in Part 23 aircraft and to publish flight manual guidance about when to reset circuit breakers.
The FAA has issued a draft policy memorandum that seeks to change attitudes about circuit breaker use in electrical systems and how pilots deal with popped circuit breakers. The policy would affect aircraft manufacturers and modification providers. Comments are due by September 12.
Snap-on Industrial is offering a multimeter certification program designed
to meet the electrical monitoring requirements of technicians. The program focuses exclusively on the multimeter, the standard device used to determine
the level of electrical current, usually AC and DC voltage, amps and resistance (ohms), present in a given application. Typical industries where multimeters
The FAA is proposing an Airworthiness Directive (AD) for the Piaggio Avanti based upon an operator report of a short circuit between a generator power cable and an anti-ice shutoff valve, which was caused by chafing between the cable and the valve. The insulation of the cable and surrounding sleeve were worn off as a result.
As part of its initiative to combat the problems associated with aging aircraft, the FAA has funded a suite of projects at the University of Dayton Research Institute (UDRI) that includes self-healing wires, smart clamps and radio wire fault detectors. The goal of the project is to eliminate the time-consuming task of tracing wire faults.
Self-healing wire technology, developed as part of an FAA initiative to combat the problems associated with aging aircraft, has been licensed to Ohio-based Pinnacle Systems–its first commercial licensee.
Irvine, Calif.-based Eaton Corp. (Booth No. 5967) recently celebrated the successful flight testing of its arc fault circuit breaker (AFCB) technology as a stand-alone replacement for existing circuit breakers. Completing more than 350 normal service flights aboard a U.S.
TDG Aerospace has introduced the Universal Fault Interrupter (UFI 3000), designed to prevent ignition sources resulting from arcing events in aircraft electrical systems.
Gulfstream Aerospace has developed software enhancement called “Circuit Flash” for electronic manuals that makes it easier for aircraft technicians to interpret detailed wiring diagrams.
A newly designed circuit board is now available for Citation 525 and a few Citation 560 operators that have been required since late last year to disengage their pitch trim and autopilot servo circuit breakers to prevent a possible runaway trim. The FAA has proposed mandatory replacement of the breakers, installation of which is covered under warranty for the Model 525.