Aegean Seagull Virtual Airline System
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Aegean Seagull |
Rules of Thumb |
Boeing 727-200F |
Boeing 727 - Rules of Thumb - Landing |
To Find Flaps 30 V Ref for Weight 1.
Take the weight in thousands over a 100,000lbs 2.
Divide by 2 3. Add 107 Example |
Boeing 727 - Rules of Thumb - Other Speeds |
To
Find Flaps 15 V Ref To
Find Flaps 5 V Ref So
Flap 5 V Ref is 20+137 = 157 Kts Use
the above procedure but add 167 at item 3 instead of 107 (increase of 60) |
Boeing 727 - Rules of Thumb - Take Off |
Estimation
of Take Off V Speeds
Again
you use the above procedure but add 104 at item 3 Flap
15
Flap 5
Flap 25 V1/VR
124
V1/VR+8=132
V1/VR-8=116 V2
124+12=136
V2 132+12=144
V2 116+12=128 |
Boeing 727 - Rules of Thumb - Climb Speed |
727-200 Again
the using that 140,000 lb example. 20+ 270=290 Kts |
Boeing 727 - Rules of Thumb - Decent |
Best
Decent Rate Example
Example
FL200 Dist 50 NM |
Boeing 727 - Rules of Thumb - Cruise |
Initial
Cruise EPR: To
determine the initial cruise EPR you can use the following formula to be
approximate Twice
the altitude (FL) +1/2 the Gross Weight over 100,000= Last two digits of
cruise EPR. |
Boeing 727 - Rules of Thumb - Landing |
To Find
VDP If
the VDP is not published, take the altitude to descend from the MDA to
TDZE (number in parentheses next to MDA) and move the decimal point one
place to the left. This gives you your time in sec's to subtract from time
to MDA to get time to VDP. |
Boeing 727 - Rules of Thumb - Temperatures |
ITo
Find ISA & TAT To
Obtain ISA Temp Double the altitude and subtract 15 |
Boeing 727 - Rules of Thumb - Time / Distance |
The first 100 NM will take approx 17 min's time you clean up and get going, (+/- 2 min, which is what you can cock it up by anyway) |
Boeing 727 - Rules of Thumb - DME ARC LEAD (Turn Lead Point) |
For
DME Arcs lead the arc by one percent of your ground speed. For example if
you ground speed is 220 Kts lead the arc (turn on) by 2.2 NM. Make sure
you get a rate one turn on, Don't mess about at 10 deg bank). |
Boeing 727 - Rules of Thumb - Approach Speed Power Setting (30 Flaps) |
As a general guide set the Fuel Flow around 3500 lbs, (give or take a bit depending on your weight). This should be close to nail the required bug speed on approach. (Ballpark Figure). A heavy 200 will need a little more. |
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