Podcast
Questions and Answers
At what temperature do pilots need to refer to QRH if wheel temperature is exceeded?
At what temperature do pilots need to refer to QRH if wheel temperature is exceeded?
What is the obstacle clearance provided by OFP MRA along an airway?
What is the obstacle clearance provided by OFP MRA along an airway?
What is the minimum oxygen requirement for 3-4 crew operation in A359 to/from Europe?
What is the minimum oxygen requirement for 3-4 crew operation in A359 to/from Europe?
What is the maximum altitude for APU to provide pressurization and air conditioning?
What is the maximum altitude for APU to provide pressurization and air conditioning?
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What happens if APU starts are attempted 3 times?
What happens if APU starts are attempted 3 times?
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What is the fuel burn rate of APU on the ground when the PACKs are ON?
What is the fuel burn rate of APU on the ground when the PACKs are ON?
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What is the minimum TAT for A350?
What is the minimum TAT for A350?
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What is the maximum crosswind for takeoff for A350 under normal runway conditions?
What is the maximum crosswind for takeoff for A350 under normal runway conditions?
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What is the meaning of NAV PRIMARY in A350?
What is the meaning of NAV PRIMARY in A350?
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What is the maximum altitude for flap and slats in A350?
What is the maximum altitude for flap and slats in A350?
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What is the minimum oil quantity for A359?
What is the minimum oil quantity for A359?
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What is the minimum oil temperature for continuous engine run in A350?
What is the minimum oil temperature for continuous engine run in A350?
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How does A350 perform fuel leak detection?
How does A350 perform fuel leak detection?
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What is the warm-up time for the engine if it is a normal operation and engine restart more than 90 minutes after shut down?
What is the warm-up time for the engine if it is a normal operation and engine restart more than 90 minutes after shut down?
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Study Notes
A350 Aircraft Limitations and Performance
- Minimum TAT (Total Air Temperature) for A350 is -52°C.
Crosswind Limitations
- Maximum crosswind for takeoff under normal runway conditions is 35 kts.
- Maximum crosswind for landing under normal runway conditions is 40 kts.
- Maximum crosswind for takeoff under contaminated runway conditions (RWYCC 4) is 27 kts.
- Maximum crosswind for landing under contaminated runway conditions (RWYCC 4) is 27 kts.
Other Performance Limits
- Maximum tailwind is 15 kts.
- Vmo is 340 kts.
- Mmo is 0.89.
- Maximum landing gear speed for A35K is 250 kts.
- Maximum landing gear speed for A359 is 250 kts, but the extension speed is a maximum of 220 kts.
- Maximum viper speed is 230 kts.
- Maximum altitude for flap and slats is 20,000 feet.
Navigation and Autoland
- NAV PRIMARY mode is IRS+GNSS.
- Autoland capability on a contaminated runway is CAT3A, but not CAT3B.
Oil and Fuel
- Minimum oil quantity for A359 is 13 qts.
- Minimum oil quantity for A35K:
- 22 qts or full tank for flights over 7 hours.
- 15 qts for flights between 5 and 7 hours.
- 13 qts for flights under 5 hours.
- Minimum oil pressure is 25 psi.
- Minimum oil temperatures:
- -40°C for engine start.
- 50°C for takeoff.
- 180°C for continuous engine run.
- Warm-up times:
- 2 minutes for turn-around operation (within 90 minutes).
- 5 minutes for normal operation (over 90 minutes).
- Fuel leak detection: FOB+FU-BLOCK fuel within 1200 kg is acceptable.
- FOB (Fuel on board) is measured by the probe in the fuel tanks.
- FU (Fuel used) is computed after the 2nd engine start.
- BLOCK fuel represents the "fuel figure being remembered at the 2nd engine start."
Wheels and Brakes
- Maximum wheel temperature for Take Off is 300°C. If it exceeds 600°C, refer to QRH.
Obstacle Clearance
- OFP MRA provides 1000 feet clearance of obstacles if the elevation of that obstacle is below 5000 feet.
- EDG MRA provides 2000 feet clearance of obstacles if the elevation of that obstacle is below 5000 feet.
- OFP MRA provides obstacle clearance within 10 nautical miles each side of an airway.
- EDG MRA provides obstacle clearance within 20 nautical miles each side of an airway.
Oxygen and APU
- Oxygen requirement for 3-4 crew operation:
- A35K: 1100 psi always.
- A359: 1100 psi, except to/from Europe where it's 1500 psi.
- APU fuel burn rate on the ground with PACKs ON is around 230 kg per hour.
- Maximum altitude for APU to provide pressurization and air conditioning is 25,000 feet.
- Maximum altitude for APU to provide assisted engine start is also 25,000 feet.
- APU can provide electricity without altitude limitations.
- After 3 attempts for APU starts, pilots need to wait for 1 hour.
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Description
Quiz about Airbus A350 aircraft performance specifications, including temperature, crosswind, and tailwind limits, and Vmo.
