Flaps After Takeoff

1

When I takeoff, what altitude should I bring my flaps back in and if I bring them in below 10,000 feet then how do I avoid a stall because I have to stay under 250kts and I won’t have flaps and the plane will pitch up.

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2

Depends on the aircraft and how much fuel you have, usually if you’re flying at around 245kts with no flaps, the aircraft won’t stall. Have a look at the specifics for each aircraft to find out, as each aircraft is different :)

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3

Usually climb at a 15 degree angle retract the flaps at 3,000 and set autopilot and climb at 2,000 the remainder

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4

Thank you!

5

As far as I’m aware, no commercial aircraft will stall at 250 knots with no flaps. If you’re very heavy your angle of attack might increase a bit, but it should still be a relatively safe amount under the stall angle of attack. Unless you’re over MTOW, in an extremely sharp turn or pull up as hard as you can, and if you are, I’m afraid it’s just not your type of day then there is nothing to worry about stalling at 250 knots.

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6

Ok, thank you!

7

I do it at 200kns for turbofan aircraft

8

SECTION 4.
NORMAL PROCEDURE

**SKYHAWK Cessna 172SP NAVIII POH

Take off
NORMAL TAKEOFF

  1. Wing Flaps - UP - 10° (10° preferred)
  2. Throttle Control - FULL (push full in)
  3. Mixture Control - RICH (above 3000 feet pressure altitude, lean
    for maximum RPM)
  4. Elevator Control - LIFT NOSEWHEEL AT 55 KIAS
  5. Climb Airspeed - 70 - 80 KIAS
  6. Wing Flaps - RETRACT (at safe altitude)

SHORT FIELD TAKEOFF

  1. Wing Flaps - 10°
  2. Brakes - APPLY
  3. Throttle Control - FULL (push full in)
  4. Mixture Control - RICH (above 3000 feet pressure altitude, lean
    for maximum RPM)
  5. Brakes - RELEASE
  6. Elevator Control - SLIGHTLY TAIL LOW
  7. Climb Airspeed - 56 KIAS (until all obstacles are cleared)
  8. Wing Flaps - RETRACT SLOWLY (when airspeed is more than 60KIAS

LANDING

NORMAL LANDING

  1. Airspeed - 65 - 75 KIAS (Flaps UP)
  2. Wing Flaps - AS DESIRED(UP - 10° below 110 KIAS)
    (10° - FULL below 85 KIAS)
  3. Airspeed - 60 - 70 KIAS (Flaps FULL)
  4. Elevator Trim Control - ADJUST
  5. Touchdown - MAIN WHEELS FIRST
  6. Landing Roll - LOWER NOSEWHEEL GENTLY
  7. Braking - MINIMUM REQUIRED

SHORT FIELD LANDING

  1. Airspeed - 65 - 75 KIAS (Flaps UP)
  2. Wing Flaps - FULL
  3. Airspeed - 61 KIAS (until flare)
  4. Elevator Trim Control - ADJUST
  5. Power - REDUCE TO IDLE (as obstacle is cleared)
  6. Touchdown - MAIN WHEELS FIRST
  7. Brakes - APPLY HEAVILY
  8. Wing Flaps - UP

ABORT LANDING OR GOING AROUND

Throttle Control - FULL (push full in)
2. Wing Flaps - RETRACT to 20°
3. Climb Speed - 60 KIAS
4. Wing Flaps - 10° (as obstacle is cleared), then UP (after
reaching a safe altitude and 65 KIAS)

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9

Good question! Obviously each plane has its own speeds which are influenced by weight. Since we simmers don’t have access to that information, there are a couple of tips to follow for a smooth, stall-free ride.
First of all, wait a bit. I usually wait to gain an extra 30kts past my takeoff speed before I start retracting my flaps.
You should retract flaps gradually, not all at once. I like to use a rule of thumb of retracting another set at each 10kts of speed.
Don’t engage VNAV right away. This’ll help prevent that violent pitching up you mentioned. Maintain the pitch manually but keep an eye on your vertical speed. If it drops too low, you’re retracting your flaps too soon. Once you’ve completely retracted the flaps you’re ready to engage VNAV.
250kts shouldn’t be an issue for stalling unless you’re past MTOW. But if you find yourself in a situation where it is an issue, then sure, use flaps until you’re past 10,000 and able to increase your speed.
Hope this helps!

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10

That is very helpful, thank you!

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11

normally i just wait with flaps15 till i get 10,000 feet, then when i put up ma throttle to 280KT or up i bring my flaps back

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12

You definitely don’t fly flaps15 up to 10000 (most planes don’t even need that for takeoff)
You can start retracting once you accelerate, usually at 1000-2000AGL (unless there is a speed restriction or a plane in front of you)

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13

i meant that i use the flaps15 till get more speed, which i need to get 1000 can u get wht i mean? but i need to learn properly about coz i do it with the most aircraft n the most time, more when ma aircraft is with too much weight… Thank u for the reply!!

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14

You said 10000 not 1000.

15

I retract them generally between 200-220 IAS. Typically this is when I am between 1000-1500 feet AGL.

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