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This is the story of west atlantic flight 3319. On the 4th of june 2019 a cargo boeing 737 was on the way from Oslo to brussels. On this flight the captain was in the right hand seat and he was watching over the first officer who was completing his command upgrade line training. The first officer would have his hands full today as there was a thunderstorm around brussels airport. As the jet approached Brussels the pilots could hear ATC reoruting planes around the active weather system. Their weather radar showed them what was causing all this commotion, a pretty bad storm cell near the airport, but the south east of the airport was clear and so the pilots decided to make an approach from the south east. So the pilots went about prepping the plane for an ILS approach to runway 25R. The ILS or the instrument landing system is a godsend as far as pilots are concerned, it allows the plane to follow radio beacons on the ground right down to the runway. It allows pilots to land in bad weather when the runway isn't visible. In the cockpit the pilots were prepping the plane for the landing and they were talking about threats and issues that they might face on this landing. But unknown to them no amount of preparation would be able to help them deal with what came next. At 6:46 pm the pilots heard a loud electrical clunk and immediately the EFIS displays on the left hand side went dark. Whatever had happened also took out the autopilot and the autothrottle. The EFIS or the electronic flight instrument system has two screens: the Electronics attitude director indicator and the electronic horizontal situation indicator. You dont need me to tell you that those are important in the cockpit and these pilots had just lost some of their instruments for some reason. The captain who was moniroting the progress of the first officer immediately took control and manually started flying the plane. But there was a problem ATC could no longer find the 737 on their radar scopes, the transponder had failed. At this point the captain did not know if something else, something much more crucial might fail and so he declared a pan pan pan and asked for priority for runway 25R. As the plane made its way to brussles, the pilots took stock of what was working and what wasnt working. To their dismay they found that both the control displays of the flight management computer were working and in addition to that they had a barrage of warnings telling them that all sorts of things were wrong with their plane. From the number one aft fuel pump to the pressurisation system to the yaw damper. Something was seriously broken with this plane. Since they had the EFIS displays on one side they decided to fly a manual ILS approach. As the approach continued the captain told atc that they had had a severe electrical issue and that they were upgrading their pan pan pan call to a mayday. They wanted to get this jet on the ground as fast as possible. As the plane approached brussels they were a bit too high but they were able to intercept the glideslope from above and they continued with the landing. As they flew the approach the captain noticed that the EGPWS or the enhanced ground proximity warning system was not working. Great another thing that wasnt working but what truly worried him was the weather cell near the airport. It was described as a wall of water with lightning piercing the clouds every 20 seconds or so. This landing would be hard without a massive stormcell nearby but that was the situation that these pilots found themselves in. When they were just a miles away from the safety of the runway the rain engulfed the airplane and the pilots had to go around. The captain had no idea how much thrust he needed to use to carry out this go around so he just estimated it and thank god it worked. The plane started to climb and the captain put the plane into a left hand bank. As he did that the first officer set the transponder to ATC 2 and now ATC could see the pilots on their radars again. As the pilots orbitted brussels they noticed that the transfer bus number one circuit breaker was open the pilots debated on
26 авг 2024
