Manual Speedbrakes on landing
Thread Starter
Joined: Aug 2001
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From: Poughkeepsie
Manual Speedbrakes on landing
Hi,
Are there any performance considerations for using manual speedbrakes on landing? I fly the 737 and I haven't seen anything in the official books, however I did see a that you have to increase the LDR in an 'unofficial' book.
Just looking for an official reference. Nothing in my company's perf book either.
IR
Are there any performance considerations for using manual speedbrakes on landing? I fly the 737 and I haven't seen anything in the official books, however I did see a that you have to increase the LDR in an 'unofficial' book.
Just looking for an official reference. Nothing in my company's perf book either.
IR
Warning Toxic!
Disgusted of Tunbridge
Disgusted of Tunbridge
Joined: Jan 2005
Posts: 4,011
Likes: 1
From: Hampshire, UK
You've checked your Flight Crew Operations Manual Performance Section (in our case QRH Perf. Section 12.4). There is no reference to it. There is no 'unofficial book' that applies. If it ain't there, it ain't a problem. Period.
Joined: Jan 2005
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From: uk
In the 737 classic MEL which my old company uses there is/was a performance correction of the order of a couple of hundred feet for Auto Speedbrake u/s.
MEL should have all the relevant bits for fault prior to dispatch, otherwise QRH/FCOM applies, as Rainboe says.
MEL should have all the relevant bits for fault prior to dispatch, otherwise QRH/FCOM applies, as Rainboe says.
Thread Starter
Joined: Aug 2001
Posts: 237
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From: Poughkeepsie
Yep I checked the QRH, there was nothing in it. I saw the unoffical couple of hundred feet to be added or a weight reduction, I'm looking for the official source for this info.
Our company is reactive and has the tendancy to point the finger in hindsight, which is great, as hindsight is 20/20.
IR
Our company is reactive and has the tendancy to point the finger in hindsight, which is great, as hindsight is 20/20.
IR
Per Ardua ad Astraeus
Joined: Mar 2000
Posts: 18,575
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From: UK
I come to the conclusion that Mr B does not consider an adjustment necessary. Current company QRP has none and MEL refers me to company QRH for LD corrections and this has........................................none
Joined: May 2003
Posts: 198
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From: france
manual speedbrakes
hello gentlemen,
there is indeed a weight penalty for landing with manual speedbrakes. it is in the vol 3 flight planning & performances.
for the b738 ng, it states: for a flap 30 landing :"with manual speed brakes, decrease field limit weight by 4200kg".
bm
there is indeed a weight penalty for landing with manual speedbrakes. it is in the vol 3 flight planning & performances.
for the b738 ng, it states: for a flap 30 landing :"with manual speed brakes, decrease field limit weight by 4200kg".
bm
Warning Toxic!
Disgusted of Tunbridge
Disgusted of Tunbridge
Joined: Jan 2005
Posts: 4,011
Likes: 1
From: Hampshire, UK
Que? If it's not in the QRH Non-Normal Landing Performance, then I would assume that for your company, no correction applies! How can it not be there, yet be in effect? Especially when nobody flying the aeroplane knows anything about it?
Thread Starter
Joined: Aug 2001
Posts: 237
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From: Poughkeepsie
No prizes for Bill Boeing
Boeing arn't gonna win any prizes for clairy in the QRH. Like I said hindsight is 20/20, and the limitation should probably be added to the QRH section, why not?
IR
IR
