MATH TEST Flashcards
What would have a faster Mach speed? 250KIAS at FL400 OAT -49 degrees C. 250KIAS at 15K on a standard day. 300KIAS at 10K OAT 6 degrees C. 300KIAS at 5K on a standard day.
250KIAS at FL400 OAT -49 degrees C.Correct
The coldest temperature is going to produce the lowest local speed of sound and thus the highest IMN. 250 at FL400 = 450KTAS, 300 at 10K = 350KTAS, 250 at 15K = 325KTAS, 300 at 5K = 325KTAS
You are at FL350 going Mach .84, 112nm from XYZ VOR. You are cleared to cross 12nm prior to XYZ VOR at 10000 feet and 250KIAS. Indicated airspeed in the descent is 300KIAS. When do you start your descent? 85nm. 92nm. 88nm. 95nm.
92nm.Correct
25000ft of altitude to lose / 1000 x 3 =75nm. Reduce speed by 50kts at a rate of 10kts / 1 NM = 5nm. So far we have 80nm. We must be at 10000 feet by 12nm prior to the VOR, so we’ll add the 12 to the 80nm for a total of 92nm from the VOR.
MDA for the LOC 27 is 450’AGL, How far from the runway is the VDP?
- 4NM.
- 5NM.
- 8NM.
- 0NM.
1.5NM.
Correct
450 ft/ 300ft/nm = 1.5nm (300 ft/nm is roughly a 3 degree glide path).
Visual Descent Point (VDP): A defined point on the final approach course of a non-precision straight-in approach from which a normal decent from the MDA to the runway touch-down zone may commence, provided the runway or approach lights are clearly visible to pilot.
To calculate a 3 degree decent angle from the VDP t the runway, divide the groundspeed by 2, then multiple the result by 10 (100kts (GS) 2 x 10 = 500 fpm.
EEPP p. 77.
The bearing pointer moves from 5 degrees in front of the wing to 5 degrees behind the wing in 8 minutes, you are doing 360kts. How far from the station are you? 280NM. 240NM. 288NM. 265NM.
288NM.
Correct
360 NM/hr / 60 min/hr = 6 NM/min. 6NM / min x 8 min = 48 NM. 48NM / 10 degrees = 4.8 degrees / NM x 60 = 288nm. At 60nm, 1 degree = 1nm. At 120nm 1 degree = 2nm. At 180nm 1 degree = 3nm, at 240nm 1 degree = 4nm. So the answer makes sense. At 288nm 1 degree = 4.8nm
What is the higher TAS? 350KTAS at 10000ft. 260KCAS at FL300 and -30deg C. 350KTAS at FL200 and -20deg C. 250KCAS at FL370 and -40deg C.
250KCAS at FL370 and -40deg C.
Correct
A quick ROT to use is KTAS = KIAS + ALT/200. So for 250 + 37000/200 = 250 + 185 = 435KTAS. 260 + 30000/200 = 410KTAS.
142 kts IAS on ILS with 20 kt headwind. What should your VSI be? 250. 600. 500. 300.
600.
Correct
(120/2= 60 add a zero = 600)
You’re holding in an aircraft that burns 3,000 lbs an hour on each of it’s three engines. You have 7500 lbs. of fuel on board. How long until fuel exhaustion? 30 mins. 40 mins. 20 mins. 50 mins. Correct
50 mins.
Flying direct to the station on the 180 degree radial, at 37000 feet, and 70 DME from the VOR. Approach tells you to cross 15DME on the 360 Radial at 10000 feet. What is your descent rate?
317 FT/NM (No airspeed given to convert it to FPM) or approx. 3 degree gradient.
340 FT/NM (No airspeed given to convert it to FPM) or approx. 3 degree gradient.
320 FT/NM (No airspeed given to convert it to FPM) or approx. 6 degree gradient.
Correct
317 FT/NM (No airspeed given to convert it to FPM) or approx. 3 degree gradient.
You need to lose 27000 feet and have 85NM to do it. 27000 ft/85NM = 317ft/NM
If you are given an airspeed in NM/min you can multiply it by 317ft/NM to get FPM.
You are on a visual approach at Denver and are at 7000’ MSL, the TDZE is 5200’. When would you descend for a 3 degree glidepath? 6NM. 5NM. 10NM. 3NM.
6NM.
Correct
1800ft / 300ft/nm = 6NM.
Two airplanes are traveling in the same direction 50nm apart. The one in front is going .76 IMN, and the one in the rear is going .86IMN. When will the one in the rear overtake the one in the front? 35 Minutes. 45 Minutes. 40 Minutes. 50minutes.
50minutes.
Correct
7.6NM/min and 8.6NM/min = 1NM/min advantage x 50 NM = 50 minutes.
One dot off on the localizer at 6nm equals what offset?
.04nm or approximately 600ft.
.05nm or approximately 300ft.
.08nm or approximately 800ft.
.05nm or approximately 300ft.
VOR 2 degrees per dot with full scale deflection equal to 10 degrees
ILS localizer 0.5 degrees per dot with full scale deflection 2.5 degrees
ILS glidepath 0.14 degrees per dot with full scale deflection 0.7 degrees
So the old 60-to-1 rule comes into play here again. At 6mn there are 10 degrees/NM. So 1 degree is = to 0.1NM, and 0.5 degrees is = to 0.05NM which is about 300 feet.
ROT: 50’/NM per dot deviation (so 6NM = 300 ft.)
ROT: 24’/NM per dot deviation off glidepath.
Winds are 340/28. RWY 1 in use. What is your crosswind? 16. 9. 18. 14.
14.
Correct
Rule of six should be applied here 1/2 of wind=14.
MDA for the LOC 27 is 450’AGL, Time from FAF to MAP is 3:00. How long after the FAF will your VDP occur?
2: 45.
2: 30.
2: 15.
2: 10.
2:15.
Correct
Take 10% of the MDA (AGL) and subtract it from the total time. That is your time on the approach until reaching the VDP 450 x 10% = 45 sec. 3:00 – 0:45 = 2:15
If you are on an ILS approach at 180KTS, what is your rate of descent? 600 FPM. 900 FPM. 350 FPM. 400FPM.
900 FPM.
Correct
Take ½ your Ground Speed and add a zero. 90+0 = 900 FPM.
Fuel burn in holding is 3000lb/hr. per engine. You have 5000lbs of fuel, how long can you hold? 35min. 50min. 44min. 45min.
50min.
Correct
5000lbs / 6000lbs/hr. = 5/6 hr. or 50min.
You are established on the 20DME arc to the north and you are going to intercept the 120R inbound to the VOR. Your flying 300KTAS, what is your lead point? 128 radial. 125 radial. 139 radial. 129 radial.
129 radial.
Correct
Turn radius = TAS/60min/hr – 2, so 300 / 60 – 2 = 3NM
Lead point = 60/DME x Turn radius (NM) = 60 / 20NM x 3NM = 9 degrees
Lead Radial = Radial +/- Lead radial. In this case we are approaching R120 from the south (north heading) so we would start a left hand turn at R129 to intercept the R120 inbound.
On a 3 degree glide slope 140kts GS at 700 FPM rate of descent, the head winds increase, what adjustment must be made?
Continue at the current rate.
Increase descent rate.
Reduce rate of descent.
Reduce rate of descent.
Correct
140KGS = 700FPM, 20kt headwind reduces Kts GS to 120. 600FPM.
You are at FL370, 0.86IMN. You need to cross the outer marker at 1600 feet. When do you start your descent? Your descent profile assumes idle power and .86IMN transitioning to 300KIAS, then 250KIAS at 10000ft. Assume the aircraft slows down at 10KTS/NM.
120NM FROM THE OUTER MARKER (115 from the Airfield).
105NM FROM THE OUTER MARKER (118 from the Airfield).
110NM FROM THE OUTER MARKER (115 from the Airfield).
110NM FROM THE OUTER MARKER (115 from the Airfield).
Correct
Round 1600 to 2000 37000-2000/1000 x 3 = 105NM
300KIAS-250KIAS = 50KTS / 10 KTS/NM = 5NM
Descent + Speed reduction = 110NM
Outer marker approx. 5nm from runway. So add 5NM if req.
You have to descend 12,000’ in 20 miles, your speed is .7 Mach. What should your VSI be?
4100 FPM.
4200 FPM.
3800 FPM.
4200 FPM.
Correct
12,000 ft/ 20 miles= 600 ft per mile
600 ft per mile X 7miles a minute = 4200.
You are flying at FL370 in cruise flight and the OAT increases 5 degrees C, and the headwind increases 5kts. What happens to your TAS and GS?
TAS increases by 4kts, therefore GS increases by 1kt.
TAS increases by 6kts, therefore GS increases by 1kt.
TAS increases by 10kts, therefore GS increases by 1kt.
TAS increases by 6kts, therefore GS increases by 1kt.
Correct
TAS increases approx. 1.2kts/1o C increase. So 5°C x 1.2kts = 6KTAS increase
6KTAS-5KTS headwind = 1kt GS increase.
You’re at FL370 traveling at 420KTAS with a 60Kt tailwind. ATC clears you to descent to 10000ft at VOR passage which is 104nm away. What is your rate of descent? 2100ft/min. 2600ft/min. 2400ft/min. 2000 ft/min.
2100ft/min.
Correct
27000 feet, 480KGS, 104nm. 104NM / 8NM/min = 13min
27000 feet / 13min = 2100ft/min (round up).
You are flying Mach 0.7 with a 50kt tailwind. What is your ground speed? 450 kts GS. 460 kts. 455 kts. 470 kts GS.
470 kts GS.
Correct
0.7IMN = 7NM/min x 60min/hr. = 420KTAS + 50kts wind = 470kts GS.
You’re at 1500 AGL in a plane that slows at 10 kts per mile. Your approach speed is 130 and you’re going 230. How far from the field to you want to begin slowing down, assuming a 3 degree glideslope?
14 miles.
10 miles.
15 miles.
15 miles.
Your aircraft is burning nine thousand pounds of fuel per hour. How long can you hold with 7500 pounds of fuel remaining. 50 minutes. 40 minutes. 45 minutes. 30 minutes.
50 minutes.
Correct
9000/60 = 150 LBS/Min, 7500LBS / 150 LBS-min = 50 minutes.
On the 10DME arc you need a 2NM lead radial, how many radials is that? 4 radials. 3 radials. 6 radials. 12 radials.
12 radials.
Correct
60-to-1 Rule, at 60NM, 1 Radial = 1NM, so at 10NM from the VOR there are 6 radials/NM, multiplied by 2NM and you get 12 radials.
If you are at FL370 and descending to FL200 at a VSI of 2500fpm. How long will it take to descend?
- 4min.
- 8min.
- 8min.
- 6min.
6.8min.
Correct
(37000-20000) ft / 2500 ft / min = 6.8min.
Winds are 340/28. RWY 1 in use. What is your crosswind? 9. 14. 16. 18.
14.
Correct
Rule of six should be applied here 1/2 of wind=14.