PPRuNe Forums - View Single Post - Pitch trim - poorly understood?
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Old 3rd Apr 2016, 11:23
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RAT 5
 
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Capn Bloggs offers the most relevant lesson, IMHO,

1. Pitch to attitude.
2. Trim out stick forces.


Being a KISS person, and in stressful situations, I do not have any more mental capacity than to follow this advice. I wonder if some are over complicating it.
What I do notice in the sim is pilots (cadets) who get themselves in odd spots and keep their thumb on the trim wheel firing a full magazine. I encourage 3 shot bursts and then reassess the target (control forces). Another 3 shot burst if necessary. It is not hard to imagine a very high nose attitude, perhaps due to max thrust and an overzealous pull up; full forward elevator control (PFD can be nearly invisible in this scenario) then a full burst of nose down trim, an over speed (flap) and a thrust reduction. The nose will pitch down with much gusto and the required elevator pull force to arrest this plummet is considerable.
Over trimming and agricultural use of thrust is not a healthy combination in B737's.
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