Fax: Technical Support: Digital Countertop Series R R V V GE90 Series. IAE Series Engines. Dec 24, ENG—72—, dated September 20, ;. Level 1 General Familiarization. A brief overview of the airplane, systems and powerplants as outlined in the Systems Description section of the Aircraft Maintenance Manual. Level 2 Ramp and Transit. Basic System overview of controls, indicators, principal components including their location and purpose Off-Link Engine Covers protect commercial aircraft engines while in storage.
They protect the engine from the elements, prevent surface contamination from oil leaks, and help stop "parts robbing". Specify Champion part number when ordering or inquiring about these manuals. ATA NO. Februar der Einbau des Schubumkehrers und der Abgasanlage, entsprechend der Zeichnungsnummer oder Sep 15, EASA issued AD , requiring modification of the FCD installed on affected aeroplanes, and installation of a placard in the cockpit, in accordance with the instructions of Airbus Service Bulletin.
All Rights Reserved. There is one EIU for each engine. Approach idle is obtained when the slats are extended. Minimum idle can be modulated up to approach idle depending on air conditioning, engine anti-ice and wing anti-ice demands. The EEC performs a fault detection on its input parameters by determining if they are valid. This check is made by applying a range of tests to each input.
Faults detected by the EEC are annunciated and recorded for maintenance or crew action, if required. ADIRU data is preferred over engine data. The EEC transmits outputs continuously on all buses in normal operation, irrespective of whether the given channel is in active control or not. The parameter values on the 2 output buses are normally identical as long as the cross channel data link is functioning.
They are validated by the EEC. The EEC also sends signals to the engine controls. The EEC checks the range limits, the rate limits and performs an interface fault detection test. A1, A2, B1, B2, in such a way that propagation of failures is prevented. The main functions of the EIU are: - to concentrate data from the cockpit panels, - to ensure the segregation of the 2 engines, - to provide the Electronic Engine Control EEC with an electrical power supply, - to give the necessary logic and information from the engine to the aircraft systems.
If some data is not available from the control channel, data from the other channel is used. The EIU looks at particular engine data on the EEC digital data flow to interface this with other aircraft computers and with cockpit panels for control and monitoring.
The ECS determines the various air bleed configurations according to logics of the air conditioning, wing anti-ice and nacelle anti-ice. This information is transmitted by the EIU to the EEC to compute the bleed air demand required at the engine customer bleed ports. Therefore engine starting is not possible in case of EIU failure. During engine start, the EIU generates a ground signal for the BMC when the start valve moves away from the closed position. The EIU also generates signals for various aircraft systems.
The dedicated alternator supplies each channel with three-phase AC power. The ignition system is made up of two independent subsystems energized by a relay box. Each subsystem includes an ignition exciter, a coaxial shield ignition lead and an igniter plug. The pneumatic starting system drives the engine High Pressure HP rotor at a speed high enough for a ground or in flight start to be initiated.
The start system is made up of the start valve and the starter. Engine motoring could be performed for dry cranking or wet cranking sequences. The EEC provides full protection during the start sequence. When the automatic start is completed, the EEC closes the start valve and cuts off the ignition. In case of an incident during the automatic start the EEC aborts the start procedure. For this manual operation, the mechanic has to be aware of the engine safety zones.
NOTE: there is no automatic shutdown function in manual mode. The starter valve is fitted with a manual override for mechanic operation on ground.
In case of malfunction, the EEC automatically shuts down the engine and performs a dry motoring sequence. A dual ignition and a fuel flow start. Start for up to 2 minutes maximum. The continuous ignition is manually selected or automatically controlled by the EEC according to the following logic. Engine 2 is shut down. During the crank sequence, the starter limitations should be observed. If the starter operation time is exceeded, a warning message is displayed on the ECAM, but there is no automatic abort.
The starter limitations when performing a dry crank are: - a maximum of 3 consecutive cycles; 2 minutes on, 15 seconds off up 2 times and one minute on, then 30 minutes off for cooling, - or 4 continuous minutes on, then 30 minutes off for cooling.
Continue to dry crank for a minimum of 60 seconds. An ECAM message comes into view. Another start with a manual operation of the start valve is then done. For this, tell the ground crew to prepare for a start valve manual operation. The start valve is opened. The start valve is closed, the engine is now in operation, continue with the normal procedure.
If the start valve does not close, an aural warning operates. For this, you must remove all bleed sources that supply the faulty start valve. Restart is not permitted, and a maintenance procedure is necessary.
You must do the necessary procedure to stop the engine. An ECAM message appears. Another start with a manual operation of the start valve will be performed. For this advise the ground crew to prepare for a start valve manual operation. The start valve is closed, the engine is running now, continue with the normal procedure. Next SlideShares. You are reading a preview. Create your free account to continue reading.
Sign Up. Upcoming SlideShare. V lbm issue Embed Size px. Start on. Show related SlideShares at end. WordPress Shortcode. Share Email. Top clipped slide. Download Now Download Download to read offline. V a5 ltm-aug Dec.
V Laction manual. Jack LYU Follow. V bsi issue V gf issue
0コメント