AS420
35 flashcards · Other · by theTisch21
Fuel LBS to GAL
/ 10 * 1.5
Two tanks? Ignore density
/2 /10 +50
Vertical Speed when levelling off at altitudes?
1000 above/below - 1000ftm 500 above/below - 500fpm 10% of VSI - Push to level
C to F
* 2 + 30
0°C?
32°F
15°C
59°F
28°C
82°F
40°C
104°F
Standard temp @ cruise alt
Drop a zero (from flight levels) * 2 -15 Change the sign
GS from Mach
Mach * 10nm /min .8mach = 8nm/min
TAS from Mach
Get rid of the decimal * 6
TAS from IAS
3 digit FL / 2 + IAS FL340 240KIAS 340/2 = 170 +240 = 410
T-Storm avoidance (Any altitudes)
10nm
T-Storm avoidance (25,000ft >=)
25nm
T-Storm avoidance (overfly)
5000ft
Deceleration
1nm for each 10kias (+1nm per 10,000lbs over landing weight) (+1nm per 10kts tailwind)
Descent distance (ratio rule)
3 to 1 1000ft down, 3nm horiz (+1 / 10kts tailwind)
3° Glideslope
GS * 5 OR GS * 10 /2
Required descent rate
NM/Min - 240kts = 4nm/,om Minutes to fix - 40nm @ 4 = 10min Rate of descent - 15000 in 40nm = 357/nm * 4mi min = 15000/min
VDP
MDA / 300
Vapp (calm wind or <10)
Vref + 5
Vapp (>10kts)
Add 1/2 of the headwind component
Descent distance (drop zeros method)
Drop 3 zeros * 3
Indicated Mach # to NM/Min?
* 10
Indicated Mach # to VVI change with 1° of pitch?
* 100
Indicated Mach # to bank for .5 stan rate turn?
* 4
Radius of 30° turn based on Indicated Mach #
-2
Pitch change required for VVI (Indicated Mach #)
VVI / (IMN * 1000)
Components for 30° wind diff
.9 head .5 cross
Components for 45° wind diff
.7 head .7 cross
Components for 60° wind diff
.5 head .9 cross
What does extending the speed brakes do to decel/descent distance?
50% reduction (approx)
For a stable approach @ 1500 AGL
Landing gear down, AS < 180
For a stable approach @ 1000 AGL
Final landing config, landing checklist complete, AS +15 -5 target, on profile w sustained VSI <=1200 FPM
For a stable approach @ 500 AGL
Stable or unstable. Only momentary deviations