The Hash Academy

 Wire Identification  There are two families of wire types:  A. United States (US) : The United States (US) wire types are installed on A300/A310/A300-600. Their core diameter has US diameters. For example AKA gauge 24 has 19 strands diameter 0.127 mm (0.01 in.).  B. Metric (M) Types: The Metric (M) wire types are installed on the other Airbus A/C for weight saving. For example CF gauge 24 has 19 strands diameter 0.12 mm (0.0050 in.). P/N Identification    All the wire types (US and Metric) agree with Standards (ABS, ASNE, EN, NSA,...). The wires are identified as follows: Standard P/N  -  Wire type code - Wire gauge  ABSXXXX - XX - XX EXXXX - XX -  XX NSAXXXXXX -  XX -  XX     For EN Part Numbers: Standard P/N - Code letter for number of cores - Wire gauge code - Insulation color code  ENXXXX - XXX  X  XXX X If it is necessary to replace between US and metric types of wires on the aircraft  y...

 Electrical Standard Practices Manual (ESPM) Introduction to ESPM: The Electrical Standard Practices Manual (ESPM) gives descriptive data and procedures for the electrical installations on all aircraft of the AIRBUS family. The standard practices information in this manual tells you how to do maintenance for the continued airworthiness of the aircraft. The ESPM is part of the Instructions for Continued Airworthiness (ICA). The ESPM always gives the best practices to do the installations or the repairs. There are several chapter 20, depending on the vendor responsible for the system (ECE, Honeywell, etc.) but whatever the vendor, their chapter 20 follows the same layout. The data contained in the ESPM includes:  - Description of electrical items. - Removal/Installation of electrical items. - Electrical checks. - Repair procedures. - Damage assessment procedures. - Other procedures as necessary (Cleaning, Inspection/Check, etc.).  The Electrical Standard Practices data ...

 EASA PART 66 Aircraft Maintenance Engineering Module 7 Oscilloscopes: The oscilloscope, or scope for short, is a device for drawing calibrated graphs of voltage vs time very quickly and conveniently. Such an instrument is obviously useful for the design and repair of circuits in which voltages and currents are changing with time. There are also many devices, called transducers, which convert some non-electrical quantity such as pressure, sound, light intensity, or position to a voltage. By using a transducer the scope can make a plot of the changes in almost any measurable quantity. This capability is widely used in science and technology.   The heart of the oscilloscope is a cathode ray tube or CRT. Looking at the face of the instrument, you are viewing the screen that the electron beam strikes. Electronic circuits in the scope apply voltages to one set of deflection plates to sweep the beam across the screen from left to right at a constant rate, thereby providing the time ...