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before alpha-floor and depends on angle of attack,
configuration deceleration rate, and flight path
angle.
It is inhibited when radio altitude is greater than
2000 ft or when alpha-floor is active or when the
aircraft is in clean configuration
TMUFACH06-T02 LEVEL 3
EFFECTIVITY 22-64-00 Page 4
Apr 30/96
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 22 AUTO FLIGHT SYSTEM
UF94200
EFFECTIVITY Page 100
ALL
FLIGHT ENVELOPE PROTECTION - ALPHA-FLOOR AND WINDSHEAR PROTECTION / LOW ENERGY AWARENESS
TMUFACH06-P02 LEVEL 3
EFFECTIVITY 22-64-00 Page 5
Apr 30/96
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 22 AUTO FLIGHT SYSTEM
UF94200
EFFECTIVITY Page 101
ALL
SELF EXAMINATION
What is the consequence of an alpha-floor detection?
A - The autothrust disengages.
B - The autopilot engages.
C - The autothrust automatically engages
with full thrust.
When is the windshear protection not available?
A - With slats/flaps extended.
B - With slats/flaps fully extended.
C - In clean configuration.
TMUFACH06 LEVEL 3
EFFECTIVITY 22-64-00 Page 6
Apr 30/96
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 22 AUTO FLIGHT SYSTEM
UF94200
EFFECTIVITY Page 102
ALL
22 - AUTO FLIGHT SYSTEM
22-60-00 FLIGHT ENVELOPE DATA ON PFD
CONTENTS :
Speed Protection
Speed Trend
Target Airspeed
Econ Speed Range
Minimum Selectable Speed VLS
Alpha Protection Speed
Alpha Max Speed
Vmax
VSW
Decision Speed V1
Minimum Flap Retraction Speed
Minimum Slat Retraction Speed
VFE Next
Green Dot
Self Examination
TMUFACI02 LEVEL 3
EFFECTIVITY 22-60-00 Page 1
Mar 31/94
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 22 AUTO FLIGHT SYSTEM
UF94200
EFFECTIVITY Page 103
ALL
FLIGHT ENVELOPE DATA ON PFD
SPEED PROTECTION
The green overspeed protection symbol indicates the
speed at which overspeed protection becomes active.
SPEED PROTECTION = (VMO + 6 kts / MMO + 0.01)
SPEED TREND
The yellow pointer starts from the speed symbol. The
end of this arrow gives the speed value which will be
attained in 10 seconds if the acceleration or
deceleration remains constant.
This arrow appears only when greater than 2 knots and
is removed when less than 1 knot. It is also removed
in case of failure of the FACs.
TARGET AIRSPEED
This symbol is either magenta or cyan and gives the
target airspeed value or the airspeed corresponding
to the Mach number.
The target airspeed value is the value computed by the
FMGC in managed speed mode (magenta) or manually
entered on FCU for selected speed mode (cyan).
The target speed is a magenta double bar when
associated with the ECON speed range. Otherwise it is
a magenta or cyan triangle.
When out of speed scale, the target speed value is
displayed in numeric form below or above the speed
scale.
ECON SPEED RANGE
In descent mode, with the ECON mode, the selected speed
symbol is replaced by two magenta half triangles :
upper and lower limits calculated by the FMGC.
They indicate the range of descent speed: +20 kt and
-20 kt or Vmin or VLS which ever is higher.
MINIMUM SELECTABLE SPEED VLS
It is defined by the top of an amber strip along the
speed scale and computed by the FACs.
The VLS corresponds to 1.13 Vs during take-off or
following touch and go. It becomes 1.23 Vs as soon as
any flap or slat selection is made. It remains at this
value until landing.
Above 20000 ft, VLS is corrected for Mach effect to
maintain 0.2 g buffet margin.
VLS information is inhibited from touch down up to 10
seconds after lift-off.
ALPHA PROTECTION SPEED
It is defined by the top of a black and amber strip
along the speed scale.
It represents the speed corresponding to the angle of
attack at which alpha protection becomes active.
This speed is computed in pitch normal law by the FACs.
TMUFACI02-T01 LEVEL 3
EFFECTIVITY 22-60-00 Page 2
Mar 31/94
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 22 AUTO FLIGHT SYSTEM
UF94200
EFFECTIVITY Page 104
ALL
FLIGHT ENVELOPE DATA ON PFD
TMUFACI02-P01 LEVEL 3
EFFECTIVITY 22-60-00 Page 3
Mar 31/94
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 22 AUTO FLIGHT SYSTEM
　
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