B737NG A/T Retard in ARM Mode
Join Date: Mar 2001
Location: I wouldn't know.
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Alas, boeing is quite happy to change that advise quoted above if they are happy with additional training on the 737 that covers the AT arm mode. They even issue a different FCOM in that case that says about AT use:
To simplify thrust setting procedures, autothrottle use is recommended during takeoff and climb in either automatic or manual flight. During all other phases of flight, autothrottle use, other than in the ARM mode, is recommended (if serviceable) only when the autopilot is engaged.
The autothrottle ARM mode feature provides minimum speed protection in the event the airplane slows to minimum maneuvering speed.
To simplify thrust setting procedures, autothrottle use is recommended during takeoff and climb in either automatic or manual flight. During all other phases of flight, autothrottle use, other than in the ARM mode, is recommended (if serviceable) only when the autopilot is engaged.
The autothrottle ARM mode feature provides minimum speed protection in the event the airplane slows to minimum maneuvering speed.
Join Date: May 2007
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Approach (APP) Mode Single A/P
A single A/P ILS approach can be executed by engaging only one A/P in CMD after pushing the APP mode select switch. Single A/P approach operation is the same as dual, with the following exceptions:
• full automatic flare and touchdown capability is not available.FLARE is not annunciated and stabilizer trim bias is not applied
• A/P status of SINGLE CH is annunciated for the entire approach after localizer capture
• an A/P go–around is not available.
So what does it mean by 'full automatic flare and touchdown capability'? if OK465 that aircraft will still land smoothly (possible without flare?)
A single A/P ILS approach can be executed by engaging only one A/P in CMD after pushing the APP mode select switch. Single A/P approach operation is the same as dual, with the following exceptions:
• full automatic flare and touchdown capability is not available.FLARE is not annunciated and stabilizer trim bias is not applied
• A/P status of SINGLE CH is annunciated for the entire approach after localizer capture
• an A/P go–around is not available.
So what does it mean by 'full automatic flare and touchdown capability'? if OK465 that aircraft will still land smoothly (possible without flare?)
Join Date: Dec 2006
Location: australia
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SR-22
Well "play around with words or not" I have used ARM mode for 24 years and it has never "bitten me", has given me good advice on occasion - as well as assisting with positive thrust during Go Arounds/Missed Approaches.
I DO find it strange that any airline would not strive to understand the increased SAFETY associated with ARM mode, in effect making a positive decision to operate with LESS safety than is available.
"...Yes M'lord, XXXX Airlines decided the Management/Training Department/Line Pilots were too lazy or too stupid to understand the "ARM" system so it was better to ignore it, albeit with a reduction in safety."
M'lord: "And prey tell how you convinced your passengers that operating with less safety was a plus for them??"
Just having a bit of fun
although in the big picture ARM mode is good **** and enhances/improves safety, EOFS!
Cheers
Well "play around with words or not" I have used ARM mode for 24 years and it has never "bitten me", has given me good advice on occasion - as well as assisting with positive thrust during Go Arounds/Missed Approaches.
I DO find it strange that any airline would not strive to understand the increased SAFETY associated with ARM mode, in effect making a positive decision to operate with LESS safety than is available.
"...Yes M'lord, XXXX Airlines decided the Management/Training Department/Line Pilots were too lazy or too stupid to understand the "ARM" system so it was better to ignore it, albeit with a reduction in safety."
M'lord: "And prey tell how you convinced your passengers that operating with less safety was a plus for them??"
Just having a bit of fun
although in the big picture ARM mode is good **** and enhances/improves safety, EOFS!Cheers
Join Date: Jul 2019
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Flare is possible in single channel autopilot,not like dual-channel with stabilizer trim nose up but aircraft will make flare and landing.
And it is proven to me and shoven in real FFS by the instructor and said just in case of life saving (with one engine and or no more fuel with low visibility
And it is proven to me and shoven in real FFS by the instructor and said just in case of life saving (with one engine and or no more fuel with low visibility
