Performance

Question 1

What is VREF for flaps 30, 300.0 kgs gross weight?

Answer 1

• 157 KIAS

Note:QRH, PI.20.1

Question 2

What is flap maneuvering speed for flaps 1?

Answer 2

• VREF 30 + 60

Note:QRH, PI.20.1

Question 3

With unreliable airspeed, what are pitch attitude and N1 for flaps up, level flight cruise, at 35,000 Feet, gross weight 300.0 kgs?

Answer 3

• Pitch: 2.5 degrees up
• N1: 91.3%

Note:QRH, PI.20.5

Question 4

What are pitch attitude and N1for final approach, gear down, 3 degree glideslope, gross weight 300.0 kgs., flaps 25?

Answer 4

• Pitch: 2.0 degrees nose up
• N1: 63.8

Note:QRH, PI.20.6

Question 5

Using the QRH PI “Performance Inflight” section 22, calculate the advisory information
normal configuration landing distance for flaps 25, Medium Reported
Braking Action, Autobrakes 4, 250.0 kgs landing weight, NO REV.

Answer 5

• 7280 - 960 + 2370 = 8690

Note:QRH, PI.22.2

Question 6

Using the QRH PI “Performance Inflight” section 22, calculate the Advisory
information non-normal configuration landing distance, for a dry runway,
Anti-skid Inoperative, flaps 25, 300.0 kgs landing weight, NO REV.

Answer 6

• 7860 + 280 + 2420 = 10560

Note:QRH, PI.22.5

Question 7

What type of braking is assumed when determining landing distance for a non-normal configuration landing? Is reverse thrust assumed?

Answer 7

• Max manual braking
• Yes, assumes max available reverse thrust.

Note:QRH, PI.22.3-36 - bottom of chart notes

Question 8

What BTMS display would you expect and what is the brake cooling schedule, for a 300 kg gross weight landing, Press Alt 2000 feet, temp 20 C, Brakes ON
Speed 160, autobrakes 4, No Reverse Thrust?

Answer 8

• Approximately 55.6/39.5 Adjusted Brake energy per brake
• BTMS of 5 to 6
• CAUTION Zone
• Delay takeoff and inspect after one hour.
• Observe Quick Turnaround limit

Note:QRH, PI.22.37-38

Question 9

Reference Number 8 above, same data and conditions, except use Four Engine Reverse Thrust. What is the expected BTMS and cooling schedule?

Answer 9

• Approximately 28.2 Adjusted Brake energy per brake
• BTMS of 4
• Ground cooling – 55 minutes.
• Observe Quick Turnaround limit

Note:QRH, PI.22.38

Question 10

If determining brake cooling from the BTMS, when would the hottest brake indication occur?

Answer 10

• 10 to 15 minutes after the airplane has come to a complete stop

Note:QRH, PI.22.38, Text 27.5

Question 11

What BTMS display on the GEAR synoptic display will cause an EICAS advisory message of BRAKE TEMP?

Answer 11

• 5

Note:QRH, PI.27.5 Text

Question 12

Is brake cooling recommended even without an EICAS advisory message?

Answer 12

• Yes

Note:QRH, PI.27.5 Text

Question 13

What is 3-engine driftdown altitude and optimum driftdown speed for a 340.0kg gross weight airplane with ISA + 10 C?

Answer 13

• 31,200 feet driftdown altitude
• 284 KIAS driftdown speed
• (note – the 335 figure is gross weight at level-off)

Note:QRH, PI.23.4

Question 14

What is 2-engine driftdown altitude and speed for a 340 kgs gross weight airplane with ISA + 10 C?

Answer 14

• 18,700 driftdown altitude
• 276 KIAS driftdown speed

Note:QRH, PI.24.1