PPRuNe Forums

PPRuNe Forums (https://www.pprune.org/)
-   Tech Log (https://www.pprune.org/tech-log-15/)
-   -   hands on throttle at landing ? (https://www.pprune.org/tech-log/416746-hands-throttle-landing.html)

stubby1 30th May 2010 16:41

hands on throttle at landing ?
 
hi everyone.
the thread on 'hands on throttle at t/o' got me to pose this Q.
is it mandatory to have your hand on throttle for landing. i understand that for a go- around it would be so, but for a difficult ldg in gusty wind/ to prevent a bad ldg if i get both hands on the yoke for that crucial second --- is it a big no no ?
in my previous flying it was accepted but in the present company a colleague was ticked off for this.

hetfield 30th May 2010 16:58

Why both hands at the yoke?

Tractor driver?
;)

Sir Herbert Gussett 30th May 2010 17:11

What are you going to use for the throttles if not your hands? Your legs?? Flying manually with autothrottle engaged is a big no no for the airlines I've worked for.

hetfield 30th May 2010 17:30


Flying manually with autothrottle engaged is a big no no for the airlines I've worked for.
Come on bus drivers......:)

411A 30th May 2010 17:32


Flying manually with autothrottle engaged is a big no no for the airlines I've worked for.
I expect 'tis quite true...except for a few operators with L1011 aircraft, where it was (is) allowed, as the autothrottle system(s) on that airplane are first rate, without exception.
I would suggest however....one hand on the throttles, as you never know when a burst of thrust might be needed, on very short order...to save your bacon.

bfisk 30th May 2010 17:43

The King Air doesn't have autothrottle, so that at least makes the question easy :)

Tmbstory 30th May 2010 17:58

Hand position on throttle for landing
 
One hand on the control yoke during the landing and the other hand on the throttles.

Tmb

Mansfield 30th May 2010 21:03

Boeing doesn't like it, but pretty much everyone I've flown the 767/757 for, as well as the MD80, disconnects the autopilot long before disconnecting the autothrottle. That said, no one lands manually with the autothrottle engaged...and the only way I can easily disconnect it prior to landing is with my hand! :)

Can't ever recall a case that required two hands on the yoke during landing.

Sir Herbert Gussett 30th May 2010 21:12


Originally Posted by hetfield (Post 5724249)
Come on bus drivers......:)

Thankfully have never stepped near the cockpit of one of them things...!

hetfield 30th May 2010 21:20


Thankfully have never stepped near the cockpit of one of them things...!
Reminds me of a course fellow (737 CPT), who gave hisself a kick and visited me as a A320 CPT in the cockpit on ground.

The ramp agent came in and said: Captain, here is the NOTOC of dangerous goods for you.

My fellow replied, oh I thought the whole aircraft is dangerous goods.

Everybody had a laugh.....:)

Chesty Morgan 30th May 2010 21:33


That said, no one lands manually with the autothrottle engaged
Well we do! We have no limitations on hand flying with the a/t engaged.

As to the first question I would suggest that if it isn't mandatory it is good airmanship.

Taking the OP's point about saving a landing by having both hands on the yoke, how about saving the landing with a go around? Can't do that without having a hand on the throttles. I know some of you might say that you can easily reach over and press the g/a button but try and find it on a dark, bumpy, ****ty night before you hit the ground after a late go around decision.

777fly 30th May 2010 21:54

I would suggest that you keep one hand available to monitor thrust lever movement at any time your aircraft autopilot/autothrottle is out of steady cruise mode. If you make this an automatic and instinctive backup to any autopilot pitch or speed demand, you will have feedback and reassurance that you are getting what you want from the automatics.( not necessarily applicable to Airbus pilots, unfortunately) In any aircraft with active autothrottles, they provide an instant cue throughout the flight regime of aircraft reaction to autopilot input, gust response, turbulence and windshear. If you do not appreciate it already, you should learn what a fantastic feedback mechanism the autothrottle response is.
It is completely inappropriate , when landing in strong and gusty wind conditions, to keep both hands on the control wheel. The stick forces involved, even in limiting conditions, should only require one hand on the control column. The other should be on the throttles, monitoring what the speed control is doing, ready to override or correct if required. Even the best auto systems struggle if you transit a huge gust or big hole in the air on approach. A hand on the throttles might have prevented the Turkish 737 accident recently, by detecting the lack of engine spool up. You should always be expecting the throttles to move up, under your fingers, by 1000 AAL at the latest.

Intruder 30th May 2010 23:06

Hand on throttles to operate reversers, or to Go Around or reject the landing when necessary.

CaptainSquelch 30th May 2010 23:35

In my gang it has been compulsary to have one hand on the thrustlevers from 2000 ft above the ground till touchdown since I started flying 30+ years ago. That is with or without autopilot.
Except for picking one's nose I can't remember anyone who didn't.

galaxy flyer 31st May 2010 01:12

Hands on throttles, by all means. I see A/P OFF, ATHR OFF" but with moving throttles and hands on them, I cannot see why the need to disconnect both, if you want to use autothrottles on approach. But, do keep an eye on the FMA for SPD annunciations.

In short, Hands on Throttles!

GF

capt. solipsist 31st May 2010 03:13

Any time the A/T is making radical changes to the thrust or any time the flaps are NOT up, my gamemasters would want you to have you guard the T/L for both manual and autothrust.

Reasons are as specified by the previous posts. :ok:

Wizofoz 31st May 2010 03:25

SOP on the 777 is for the A/T to remain on for the entire flight, including landig. The FBW system means the pitch changes asociated with power change (which is the reason it's better to be "All on or all off" on other Boeings) are taken care of.

That being said, hands on T/Ls during power changes and critical phases is a good technique as it gives tactile feedback of power changes. If the A/Ts DIDN'T go into retard in the flare, whilst you are eyes outside judging the landing, all sorts of mayhem could ensue.

boofhead 31st May 2010 06:41

I remember that the additive to the Vref for wind/gust was 5 knots if the A/Thrust was on, and the usual half/all if manual thrust. I liked to use the A/T even when flying manually and never had any problem with it, especially if the winds were gusty. I watched many pilots try to use it and could not do so successfully, since they could not handle the pitch changes associated with changes in thrust, and when they flew, the airplane was constantly oscillating. Rather than sharpen up their skills, it was easier to ban the use of A/T when manually flying and bring the lowest common denominator down to their level.

Even in the "old" days automation was taking it's toll.

411A 31st May 2010 14:59


Rather than sharpen up their skills, it was easier to ban the use of A/T when manually flying and bring the lowest common denominator down to their level.

Amen to that....so very true, and not just with A/T either.

stubby1 31st May 2010 15:05

thanx all
I have my answer. should help me in maintaining good flying habits


All times are GMT. The time now is 06:33.


Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.