PPC

Question 1

When must PPC be “re-computed”

Answer 1

Increase of:
FAT: +5ºC
PA: +500ft
WT: +200 lbs

Question 2

How do you convert kg to lbs ?

Answer 2

Kg * 2.205

Question 3

MAX PA & TEMP will be used for all computations excepts

Answer 3

GO/NO GO TQ
Predicted hover TQ

Question 4

How is “Zero fuel weight” on the PPC computed ?

Answer 4

Aircraft GWT - Total fuel weight

GWT - Fuel weight= zero fuel weight

Question 5

Why are we concerned with:
if MAX TQ avail AEO is below/above 97%

Answer 5

If it’s below (high PA): We can never achieve 97% (MAX TQ)

If it’s above (low PA): We can easily exceed 97% and will have to be careful when raising the collective

Question 6

During Hover PWR check, if “3ft-HOVER-TQ” is above/ below go-no go what does this mean to us?
1. IGE above
2. IGE below
3. OGE above

Answer 6

IGE above 3’ TQ Over max gross weight
IGE below 3’ TQ below max gross weight
OGE above 3’ TQ Aircraft is to heavy to perform OGE

Question 7

What is the significance of knowing
“MAX GWT OGE w/MCP”

Answer 7

If actual aircraft weight is above this number you can expect to be in the 5 min PWR T/O range (>8.5 FLI) while performing OGE maneuvers

Question 8

1% TQ is approx. ____ lbs

Answer 8

90 lbs

Question 9

What is the significance of knowing
“H/V altitude (AGL)”

Answer 9

Hovering OGE (0 airspeed)
At or above this altitude: Safe landing expected after Single engine failure
Below this altitude: Safe landing NOT to be expected after Single engine failure (avoid+stay minimum time)

Question 10

CRUISE

What A/S + TQ will you use for:
1. Staying on stations as long as possible
2. Climb as fast as possible

Answer 10

1. Max endurance
2. MAX TQ available + 45kts (Vx) to 65kts (Vy)

OBS IAS > 65 KIAS = OVER TQ

Question 11

What’s the significance of
“OEI IAS - min/max”

Answer 11

Minimum: When doing practice OEI landings attempt to hold this airspeed with max FLI (close to touchdown speed)

Maximum: This airspeed you can expected when obtaining 12 FLI (obs vne OEI 110 kts)

Question 12

When does arrival data have to be computed ?

Answer 12

FAT: +5ºC
PA: +500ft
Weight: +200 lbs

Question 13

Why is DA important ?

Answer 13

It determines the aircrafts performance

Question 14

ATM TASK

Compute PPC values:
Weight ± ?
Fuel flow ± ?
Airspeed ± ?
TQ ± ?

Answer 14

Weight ± 22 kg / 50 lbs
Fuel flow ± 50 lbs/hr
Airspeed ± 5 kts
TQ ± 2 %