A320 and NADP 2
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A320 and NADP 2
Hi,
It has been some years since I flew on the A320, and I have a question regarding the NADP 2 departure, and how the Airbus does it.
After passing 800 (or what ever thrust reduction altitude the airline has as a policy), the thrust is brought back to the climb detent. The aircraft accelerates and flaps are retracted on schedule.
Now, when the aircraft is "clean" and still below 3000 AAE, I seem to remember the aircraft accelerating to 250, and did not maintain Green Dot for the climb below 3000 ft AAE.
Could some one help me out here?
Many thanks.
It has been some years since I flew on the A320, and I have a question regarding the NADP 2 departure, and how the Airbus does it.
After passing 800 (or what ever thrust reduction altitude the airline has as a policy), the thrust is brought back to the climb detent. The aircraft accelerates and flaps are retracted on schedule.
Now, when the aircraft is "clean" and still below 3000 AAE, I seem to remember the aircraft accelerating to 250, and did not maintain Green Dot for the climb below 3000 ft AAE.
Could some one help me out here?
Many thanks.
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Hi,
It has been some years since I flew on the A320, and I have a question regarding the NADP 2 departure, and how the Airbus does it.
After passing 800 (or what ever thrust reduction altitude the airline has as a policy), the thrust is brought back to the climb detent. The aircraft accelerates and flaps are retracted on schedule.
Now, when the aircraft is "clean" and still below 3000 AAE, I seem to remember the aircraft accelerating to 250, and did not maintain Green Dot for the climb below 3000 ft AAE.
Could some one help me out here?
Many thanks.
It has been some years since I flew on the A320, and I have a question regarding the NADP 2 departure, and how the Airbus does it.
After passing 800 (or what ever thrust reduction altitude the airline has as a policy), the thrust is brought back to the climb detent. The aircraft accelerates and flaps are retracted on schedule.
Now, when the aircraft is "clean" and still below 3000 AAE, I seem to remember the aircraft accelerating to 250, and did not maintain Green Dot for the climb below 3000 ft AAE.
Could some one help me out here?
Many thanks.
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But isn´t this in "violation" of the NADP 2? I thought that "enroute climb speed" should be set after 3000 ft?
Enroute climb speed below 10000 is usually 250 kt
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FMS SETUP :
THR RED : 1000’ AAL
ACC ALT : 1000’ AAL
Preselect Climb Speed : G dot speed
After Take-off : At ACC ALT, accelerate towards GDOT speed and at the initiation of the first FLAPS/
SLATS retraction set Climb Thrust, Continue climb at GDOT speed till 3000’ AAL. Resume
Normal Speed schedule.
THR RED : 1000’ AAL
ACC ALT : 1000’ AAL
Preselect Climb Speed : G dot speed
After Take-off : At ACC ALT, accelerate towards GDOT speed and at the initiation of the first FLAPS/
SLATS retraction set Climb Thrust, Continue climb at GDOT speed till 3000’ AAL. Resume
Normal Speed schedule.
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FMS SETUP :
THR RED : 1000’ AAL
ACC ALT : 1000’ AAL
Preselect Climb Speed : G dot speed
After Take-off : At ACC ALT, accelerate towards GDOT speed and at the initiation of the first FLAPS/
SLATS retraction set Climb Thrust, Continue climb at GDOT speed till 3000’ AAL. Resume
Normal Speed schedule.
THR RED : 1000’ AAL
ACC ALT : 1000’ AAL
Preselect Climb Speed : G dot speed
After Take-off : At ACC ALT, accelerate towards GDOT speed and at the initiation of the first FLAPS/
SLATS retraction set Climb Thrust, Continue climb at GDOT speed till 3000’ AAL. Resume
Normal Speed schedule.
So if this is not done, the aircraft will not fly an "NADP 2", is this correct?
We do as above, just preselect a climb speed of Green Dot + 5kts so after clean up the aircraft will climb at the preselected speed. At 3000 manage the speed and it will accelerate to 250kts.
Only half a speed-brake
Agreed, NADP2 to the letter means flying green dot(-ish) until 3K.
The previous good operator would use 1500 ThrRED+AccALT -the devices become fully retracted only around 2800' AAL thus we never cared.
My personal choice would be 800+800 and SPD SEL 210 on the PERF CLB pg.
The previous good operator would use 1500 ThrRED+AccALT -the devices become fully retracted only around 2800' AAL thus we never cared.
My personal choice would be 800+800 and SPD SEL 210 on the PERF CLB pg.
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Hi,
It has been some years since I flew on the A320, and I have a question regarding the NADP 2 departure, and how the Airbus does it.
After passing 800 (or what ever thrust reduction altitude the airline has as a policy), the thrust is brought back to the climb detent. The aircraft accelerates and flaps are retracted on schedule.
Now, when the aircraft is "clean" and still below 3000 AAE, I seem to remember the aircraft accelerating to 250, and did not maintain Green Dot for the climb below 3000 ft AAE.
Could some one help me out here?
Many thanks.
It has been some years since I flew on the A320, and I have a question regarding the NADP 2 departure, and how the Airbus does it.
After passing 800 (or what ever thrust reduction altitude the airline has as a policy), the thrust is brought back to the climb detent. The aircraft accelerates and flaps are retracted on schedule.
Now, when the aircraft is "clean" and still below 3000 AAE, I seem to remember the aircraft accelerating to 250, and did not maintain Green Dot for the climb below 3000 ft AAE.
Could some one help me out here?
Many thanks.
GETTING TO GRIPS WITH NOISE
A bit of Christmas 🎅 reading 😄
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Section 5.2 states:
POSSIBLE ACTIONS FOR AIRLINE AND AIRFRAMER
Considering the above, each operator may freely:
- ,Define the appropriate take-off rating (TOGA, DERATE or FLEX when possible)
- • Determine the cutback height (above 800 ft)
- Adapt the climb rating (in respect to ICAO recommendations quoted above)
- Tune the VZF (for NADP 2) (S Speed in Airbus Lingo)
Somehow we have got away with that
I guess for fuel economy its the best to be done and accelerate to enroute climb speed as soon as possible?
Only half a speed-brake
V(zero-flap) would be Vls(clean) or quite agreeably GD or somewhere just below GD+20 (IAE engines max endurance).
Not the S speed. Pedantic, but you asked for it.
Not the S speed. Pedantic, but you asked for it.