2018年4月20日 · On the 777 and later, there was an effort to move the detailed message logic out of the EIU to the system responsible for the message - basically making EIU/EICAS just a 'light bulb'. On the early 747-400, there were lots of EICAS message logic errors, because the EICAS group didn't understand the message requirements as well as the source ...

2016年10月24日 · 747-400 Wiring Schematic 49-15-01 shows door position switch S1598 sending a signal to the APUC (on pin D11). The switch has the note "Shown closed <13deg". So we can assume that OPEN is 13 deg or greater. On Wiring Schematic 49-11-02, the APU start system is shown.

2009年11月11日 · Tech Log - 747-400 EICAS maintenance page - Aircon system - Anybody more technically minded than myself able to answer this question?! On the EICAS maintenance page for the Air Con system, individual valve positions for the trim air valves are displayed. If a valve was locked mechanically into eg. 25% open position (as

2022年5月1日 · BTW, apparently Boeing decided that building both 2 ADC and 3 ADC configurations for the 747-400 was more trouble than it was worth - the 747-8 has the 3 ADC configuration basic. punkalouver 18th Feb 2022 22:43

2006年10月29日 · Tech Log - Boeing 747-400 Flap Drive problem - hi all, please would you all be kind to share the following? thanks in advance. during flap extension or retraction when you get a eicas 'flap drive", at what speed are we to fly aircraft? then, says after a speed addition as per qrh, as soon as we inserted the new &qu

2018年4月28日 · Tech Log - Outflow valve 747-8 - Hi there! Situation was: just after takeoff EICAS message L OUTFL VALVE illuminated and at CMC page was AC MOTOR. Crew do not start appropriate check list yet, but left outfl valve slowly moved to full close position. Why? The brakes should hold faulty valve when AC motor inop. Right

2014年8月13日 · The EICAS is the Engine Indicating Crew Alert System. So, as stated it shows engine indications and.... the crew alert system, which shows: Warnings Cautions Advisory Memo + Status cue. 777 & 747-8 only - MFD(s) show the ECL &/or system pages.

2009年2月25日 · On the 747-400, the EICAS message is disabled as it is on all the time. Not on the BA -400s. And the ...

2011年12月24日 · Tech Log - FUEL PMP STB L/R EICAS Messages (747-400) - It was discovered that the Advisory Messages ">FUEL PMP STAB L/R" and "FUEL PMP STB L/R" are listed in our latest DDG. Different faultfinding procedures appear in our Fault Isolation Manual for each message. The logic for each message type is

2023年8月14日 · Tech Log - B-747-8 multi eng fail & "ELEC DRIVE" EICAS advisory - Technical question about the 747, -8 specifically although it may also apply to the -400. During a multi eng fail/stall scenario, first the memory items are accomplished which entail moving the affected engine fuel control switches from