# Yakovlev Yak-11 — yak11_fltrep11

> **NOT FOR FLIGHT** — source fidelity: unreviewed | operational review: none | completeness: full

> **content_gap**: Section "Cruise Performance" item count differs between passes (3 vs 4); verify nothing was dropped.

## Preflight and Cockpit

**Canopy**
> **NOTE:** Do not use the overhead toggle to close the canopy; that releases the canopy securing pins and allows the whole canopy to fall off the rear of the fuselage.
- [ ] Use the little knob at the forward corner to close the canopy
- [ ] Make sure the canopy is fully home before takeoff
> **NOTE:** The canopies are allowed to be opened in flight.

## Engine Start

**Radial engine priming and start**
> **NOTE:** Engine is turned over pneumatically.
> **NOTE:** Pull-through to clear the bottom cylinders of oil still has to be done if the aeroplane has been left standing for a few hours.
- [ ] Charge the internal priming cylinder with fuel using the lever on the lower right of the cockpit
- [ ] Press the firing button on the left of the instrument panel

## Taxi and Power Checks

> **NOTE:** Taxying the Yak C11 is straightforward; the aeroplane feels heavy on the ground. Toe brakes on this example make steering easier.
- [ ] Make sure cowl flaps are open
> **WARNING:** Do not take off with cowl flaps closed. There are two types of Yak pilots — the ones who have taken off with the cowl flaps closed, and the ones who haven't yet but will.

## Takeoff

- [ ] Line up and allow the aircraft to run forward a few feet to make sure the automatic tailwheel lock engages with aft stick before applying full power
- [ ] Check Ts and Ps before rotation
- [ ] Rotate at 90 knots — **90 KT**
- [ ] Once airborne, raise the gear
- [ ] Bring power back to 75% with the throttle and rpm lever
- [ ] Climb at 135 knots — **135 KT**
- [ ] At max weight and max power, VSI will show 1,600 fpm — **1600 FPM**

## Cruise Performance

- [ ] At full throttle at 1,000 feet, speed is 225 knots TAS and fuel burn is 50 gallons per hour — **225 KT / 50 GPH**
- [ ] At 75% power, speed is 200 knots and fuel burn is 33 gallons per hour — **200 KT / 33 GPH**
- [ ] At 140 knots, fuel burn is 16 gallons per hour — **140 KT / 16 GPH**

## Descent and Slowing Down

> **NOTE:** The Yak C11 is typically difficult to slow down and takes a while to get the airspeed low enough to meet the gear and flap limits, even with the throttle fully closed.
- [ ] Gear limit is 163 knots — **163 KT**
- [ ] Flap limit is 135 knots — **135 KT**

## Approach and Landing

> **NOTE:** The best approach is a curved one; visibility over the nose is poor, and non-existent from the rear seat.
- [ ] Make a positive landing flare
- [ ] After touchdown, bring the stick back before applying large brake pressure to prevent a noseover

## Stall and Spin

> **NOTE:** The aeroplane exhibits a pronounced starboard wing drop in all configurations and power settings; severity depends on applied power. There is little warning buffet.
> **NOTE:** The aeroplane can flick into a steep, mind-numbing spin. Spin recovery is predictable and it comes out cleanly within 90 degrees of rotation.

## Specifications

- [ ] Vne — **323 KT**
- [ ] Length — **8.56 M**
- [ ] 70% cruise — **195 KT**
- [ ] Max takeoff weight — **2,150 KG**
- [ ] Stall speed — **83 KT**
- [ ] Takeoff run — **575 M**
- [ ] Wingspan — **9.53 M**
- [ ] Engine — **ASH 21, 700 HP**

---

NOT FOR FLIGHT — source fidelity: unreviewed | operational review: none | completeness: full  
Source: Yakovlev/Yak-11/yak11_fltrep11.txt  
Rights: licensed  
Checklist hash: 32421c321439645976b38f7269a0861ee9f7a84d98daed428c418a275ff6fd1f  
Verify against the aircraft's own approved documentation before use.