September 14, 200916 yr Hi Captains!Well, I've searched many sites, including the technical site http://www.b737.org.uk/ but did not have a practical explanation about the FLAP 2 Position on the 737's.I see that flap 2 pos. is seldom used, according to flight/tech. videos. 1st FLAP1 then FLAP5 according to TO and LDG procedures.So anyone can explain me or point me some info/site with the explanation of FLAP2 position? Is it for NON-NORMAL procedures when operating with ALTN FLAP system?Many thanks in advance.Best regards from Portugal :( Pedro Lima"The sky is the home of birds... we are just guests... guests of honor" Peter Besenyei"...redundancy is very important in aviation; that is why airplanes have 2 wings instead of 1!" M.S.A.Q.My videos
September 14, 200916 yr I'm not a 737 expert, based on my scant knowledge Flaps2 is only used as an intermediate stop between Flaps5 and flaps up on takeoff where the flaps are retracted on a schedule indicated on the speed tape, or extended on schedule for approach. Normal takeoffs are Flaps5, under certain conditions Flaps10, but I don't know of any procedure that calls for Flaps2. Dan Downs KCRP
September 14, 200916 yr Hi Pedro,I am not an expert either but, you're right : Flap 2 is either not mentioned at all or mentioned as "rarely used" in the available documentation. And as you mention correctly, Flap 1 is the fist step in the sequence, not Flap 5 (ie you go from flaps up to flap 1 and then flap 5). Dan will probably blame his failing memory but I think the truth is he spends too much time in the J41 ! :( Since there are quite a few real 737 drivers in this forum, I hope someone knowlegeable can expand on the topic.Bruno
September 14, 200916 yr Hi Pedro,I am not an expert either but, you're right : Flap 2 is either not mentioned at all or mentioned as "rarely used" in the available documentation. And as you mention correctly, Flap 1 is the fist step in the sequence, not Flap 5 (ie you go from flaps up to flap 1 and then flap 5). Dan will probably blame his failing memory but I think the truth is he spends too much time in the J41 ! :( Since there are quite a few real 737 drivers in this forum, I hope someone knowlegeable can expand on the topic.BrunoOn approach, I use this quick and easy-to-remember rule (of my own) that suits very well a wide range of landing weights for the 737:SPEED --- FLAPS POSITION205 ---------- 1195 ---------- 2185 ---------- 5175 ---------- 10165 ---------- 15 And gear down.155 ---------- 25145 ---------- 30 Normal landing flaps.135 ---------- 40 (short and wet runway). Caution: tends to make the aircraft float. signed: José Luis
September 14, 200916 yr From the Classic and on, I've heard of using Flaps 2 on approach. This was only to annoy other pilots you didn't like - just to throw them a little curveball.But, I believe F2 is a hold-over from the "Jurassic" models (-100/-200). There was some benefit to using F2 on a mid-length runway with a obstacle in the 3rd or 4th stage. Matt Cee
September 14, 200916 yr Dan will probably blame his failing memory but I think the truth is he spends too much time in the J41 !Truth is, I'm spending too much time on sidstar procedures. My wording was not accurate, my recall was perfect :) Dan Downs KCRP
September 15, 200916 yr Author From the Classic and on, I've heard of using Flaps 2 on approach. This was only to annoy other pilots you didn't like - just to throw them a little curveball.But, I believe F2 is a hold-over from the "Jurassic" models (-100/-200). There was some benefit to using F2 on a mid-length runway with a obstacle in the 3rd or 4th stage.Hello again Captains!Well, I guess that are valid explanations. Thanks again and best regards :( Pedro Lima"The sky is the home of birds... we are just guests... guests of honor" Peter Besenyei"...redundancy is very important in aviation; that is why airplanes have 2 wings instead of 1!" M.S.A.Q.My videos
September 29, 200916 yr Author Just to finish the post, sadly I have never had the chance to be on a working real 737NG. I was inside a 734 in maintenance though. eheheAvailing the animations in the PMDG 73XNG, going from FLAP1 (krueger inboard flaps extends and 1st stage of outboard slats(?) ) to FLAP2, there is no motion.The motion continues in FLAP5 with 2nd stage of slats and 1st stage of TE FLAPS.Best regards and happy landings! :( Pedro Lima"The sky is the home of birds... we are just guests... guests of honor" Peter Besenyei"...redundancy is very important in aviation; that is why airplanes have 2 wings instead of 1!" M.S.A.Q.My videos
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