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October 7, 2016 by
Airbus A340 Fuel System & Distribution / Briefing The fuel system stores fuel in 6 fuel tanks (LH Inner, LH Outer, RH Inner, RH Outer, Center, and Trim). Note: The photo is taken from AIRBUS VACB CD / Its here for studying purposes only. It is not allowed to copy it for trading purposes without prior notice from AIRBUS. The fuel is used to feed the engines and APU, controls the position of CG and recirculates fuel for IDG oil cooling. The fuel system and its related functions are controll...
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October 6, 2016 by
Rules For Dispatching Aircraft For Next Flight I would like to brief some information regarding the basics in dispatching an aircraft for the next flight. These information are as follow: 1- When the aircraft reached the destination, the pilot will register any comments, faults, warnings, observations,that occurred during his flight in the ATL - Aircraft Technical Log Book-. If he has no comment then he will write down "NIL DEFECTS". At the same time, when the aircraft reaches to the gate, t...
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October 3, 2016 by
Boeing Nose Wheel steering To directionally control the aircraft on the ground, nose wheel steering is provided which can be controlled at the Captains position but also as an option at the First Officer side. When the aircraft is in flight and the nose strut extends, the strut/wheels straighten by means of a mechanical centering cam inside the strut. Steering inputs are disabled as landing gear extend pressure is removed, also when the PSEU determines the aircraft in-flight, a signal from ...
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September 25, 2016 by
Boeing Brakes system The B737 is equipped with 4 brake units with either metal or carbon brake disc packages. Carbon Brakes have the advantage of being lighter in weight, absorbing better kinetic energy and when used correctly a longer life. (During taxi it is better to apply one firm application than a few gentle applications) These brake units are identified in categories related to aircraft weight and speed and could be “standard” for lighter weight–, or “high capacity” for heavier aircraft...
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September 22, 2016 by
Boeing Landing gear warning horn   When during the final landing phase, the gear is not in the down and locked position a continuous warning horn will sound to warn the crew. The horn sounds when any gear is not down and locked with the next conditions: Flaps 0 – 10• < 800 feet RA• either thrust lever < 20° TLA• an engine shut down with the operating engine thrust lever < 34° TLA• horn can be silenced by pushing the landing gear warning HORN CUTOUT switch Flaps 0 – 10• < 200 feet RA• either t...
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September 21, 2016 by
Why do airplanes take longer to fly West than East?   It’s interesting that you ask this – I am directly experiencing it right now as I sit on an airplane from the UK. It took 5 hours to go West-East on this journey, but is taking about 7 East-West. The reason for the difference is an atmospheric phenomena known as the jet stream. The jet stream is a very high altitude wind which always blows from the West to the East across the Atlantic. The planes moving at a constant air speed thus go faster...
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September 17, 2016 by
Boeing just patented a jet engine powered by lasers and nuclear explosions Last week, the US Patent and Trademark Office approved an application from Boeing’s Robert Budica, James Herzberg, and Frank Chandler for a laser- and nuclear-driven airplane engine. With airplane makers constantly on the lookout for new and more efficient ways to power their products, this laser engine is the latest idea cooked up by the engineers at Boeing. Modern airliners such as the Boeing Dreamliner are powered by ...
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September 17, 2016 by
A350 XWB MSN004 successfully undertakes water ingestion tests at Istres       Airbus has successfully performed certification testing to demonstrate the A350 XWB’s ability to operate on wet runways. During these tests at Istres, France, the flight-test aircraft, MSN004, travelled through troughs containing at least 22mm of water depth, at a variety of speeds, starting at 60kts, and successively increasing to around 140kts. This test validates how the aircraft would behave on a very rain-soaked ...
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September 17, 2016 by
Boeing Static and total air pressure system.   Several indications and aircraft components operate by the use of static and/or pitot pressure. Where static (ambient) air pressure is the current air pressure around the aircraft, and pitot (dynamic) air pressure is the air pressure measured in a pitot tube as a result of forward movement of the aircraft. These pressures are obtained from three pitot probes, and six static ports on both sides of the nose fuselage. The pitot probes are located at:...
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September 13, 2016 by
Air Data & Inertial Reference Unit (ADIRU)     The ADIRU consists of a Power Supply, an Air Data Module and the Inertial Reference Unit which performs air, and inertia related calculations. Operating power for the L ADIRU comes from the 115/28 VAC standby bus where the R ADIRU from 115VAC/28VAC XFR bus 2.Backup power for both ADIRU’s comes from the 28 VDC Switched Hot Battery bus. (ON DC) All Right ADIRU c/b’s can be found on P6-1 panel and all Left ADIRU c/b’s on the P18-1/2 panels. (see Ele...
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September 13, 2016 by
Boeing Stall Management & Yaw Damper (SMYD) computers SMYD computers The 2 Stall Management & Yaw Damper (SMYD) computers calculate commands for stall management, yaw damping and for the Wheel To Rudder Interconnect System. (WTRIS) The two SMYD computers are interchangeable and programmed by pins to operate as either SMYD 1 or SMYD 2. SMYD 1 is powered from the 28 VDC STDB BUS and calculates primary yaw damping and turn coordination to operate the main rudder PCU by hydraulic system B. SMYD 2...
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September 9, 2016 by
Boeing 737 - Remote Control Circuit Breaker   There are (normally) two batteries, the MAIN BAT and the AUX BAT where the primary purpose of the AUX BAT is to work in parallel with the MAIN BAT supplying STANDBY AC and DC power. Also there are two Remote Control Circuit Breakers (RCCB’s), the STATIC INVERTER RCCB and DUAL BATTERY RCCB. The RCCB’s control DC power to the Static Inverter, converting 28 VDC into 115 VAC for operation of the 115 VAC STDB bus. In turn the RCCB’s are controlled by t...
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