Lesson 2.3: Limits and the Airspeed Indicator · F33A Airspeeds

reSource Course · High Performance & Complex · Module 2

F33A Airspeeds

The numbers that take the Bonanza from the runway to cruise climb and back to the runway.

The F33A is heavier and faster than the airplanes most pilots move up from, so things happen sooner and the numbers matter more. This module covers every speed in the POH's Section IV list, when to fly each one, and how those recommended speeds differ from the limits in Section II. All speeds are indicated airspeed in knots. Plan on about six minutes.

3Lessons
4Interactive labs
14Check questions

The F33A Speed Card

Interactive

Amber bugs mark every Section IV speed (POH 4-3). The colored arcs are left off until the course adds POH Section II, Limitations.

Module 2 · F33A Airspeeds · Lesson 1 of 3

Lesson 2.1

Takeoff and Climb Speeds

Five numbers take you from the runway to cruise climb. Know them before you start the engine.

SourcesF33A POH 4-3, 4-11 · PHAK Ch. 11 · AFH Ch. 12

In a trainer you have time to glance at a speed card after liftoff. In the F33A you do not. The airplane accelerates quickly at full throttle and 2700 rpm, and the gear wants to come up within seconds of leaving the runway. Brief these speeds during the before-takeoff check so they are in your head, not on your kneeboard.

SpeedIASWhen you fly it
Liftoff71 ktThe airplane leaves the runway.
At 50 ft77 ktThe speed to have as you pass 50 feet.
Best angle of climb, VX77 ktOnly while you clear an obstacle.
Best rate of climb, VY96 ktOnce obstacles are behind you and you want altitude quickly.
Cruise climb107 ktThe normal climb to altitude.

VX gives the most altitude in the shortest distance over the ground. VY gives the most altitude in the shortest time. VX comes with a high nose, little cooling air through the cowling and a poor view ahead, so lower the nose to VY as soon as the obstacle is cleared. Once you are safely above the ground, lower it again to the 107 kt cruise climb. The engine runs cooler, you can see traffic over the nose, and you still climb well. The POH pairs cruise climb with 25 in. Hg (or full throttle) and 2500 rpm; Module 4 covers that power setting.

Fly the Departure

Interactive
Target IAS71 kt
PhaseLiftoff

Not to scale. Step through each phase in order and say the speed out loud before you click.

Remember

71 off, 77 at fifty, 96 to climb, 107 to cruise climb.

VX and the 50-ft speed are the same number, 77 kt. Hold it only as long as the obstacle needs it.

Check Yourself

Module 2 · F33A Airspeeds · Lesson 2 of 3

Lesson 2.2

En Route and Approach Speeds

Slow down for the bumps, hold a steady 70 on approach, and know the crosswind the airplane has demonstrated.

SourcesF33A POH 4-3, 4-13 · PHAK Ch. 5, 11 · AFH Ch. 12
134 kt

Turbulent Air Penetration

Slow to 134 kt or less when you are in turbulence or expect it.

70 kt

Approach and Go-Around

One number for final and for the go-around, so the go-around starts at the speed you already hold.

17 kt

Demonstrated Crosswind

The crosswind component shown during certification. It is not a limitation.

Why Slow Down in Turbulence

A gust changes the wing's angle of attack suddenly. At a lower airspeed, a strong gust stalls the wing briefly before it can load the airframe past its limits. At a higher airspeed, the same gust can overstress the structure. That is the idea behind maneuvering speed in the PHAK, and it is why the POH gives a turbulent air penetration speed. Slow down before you enter forecast or reported turbulence, not after the first jolt.

Plan the Descent

The Airplane Flying Handbook's chapter on complex airplanes makes the point plainly: a clean, retractable-gear airplane picks up speed fast when the nose comes down. Start descents early and reduce power gradually so you arrive in the pattern at a manageable speed. Module 4 covers how to do this without cooling the engine too quickly.

Approach at 70

Fly a stabilized final at 70 kt. If you have to go around, you start from that same speed: full throttle and 2700 rpm, hold 70 kt until clear of obstacles, then clean up. Module 8 covers the full flow.

Crosswind Component

The 17 kt figure is the crosswind component the manufacturer demonstrated, not the total wind and not a legal limit. A more skilled pilot may land in more; a new Bonanza pilot should treat 17 kt as an upper limit for personal minimums, and lower it until their crosswind technique in this airplane is proven. Use the tower or ATIS wind, which is magnetic like the runway number.

Crosswind Component

Interactive
Headwind17 kt
Crosswind14 kt

Components rounded to the nearest knot. Add any gust to the wind speed before you compare against 17 kt.

Remember

134 in the bumps. 70 on final. 17 is a demonstration, not a limit.

A go-around starts at 70 kt, the speed you are already flying on final.

Check Yourself

Module 2 · F33A Airspeeds · Lesson 3 of 3

Lesson 2.3

Limits and the Airspeed Indicator

Section IV gives you speeds to fly. Section II gives you speeds you must not exceed.

SourcesF33A POH Sections II and IV · PHAK Ch. 8 · AFH Ch. 12

Every speed in the first two lessons is a recommended speed from Section IV, Normal Procedures. Fly them closely and the airplane performs as the POH describes. The limits are different. They are FAA-approved operating limitations in Section II, and exceeding one can damage the airplane. Some appear as colored arcs on the airspeed indicator. The ones that matter most in a complex airplane, the landing gear speeds, do not.

SpeedMeaningWhere you find it
VSOStall speed in the landing configurationBottom of the white arc
VS1Stall speed in a specified configuration, normally cleanBottom of the green arc
VFEMaximum flap extended speedTop of the white arc
VNOMaximum structural cruising speed. Above it is the yellow caution range, for smooth air only.Top of the green arc
VNENever-exceed speedRed line
VADesign maneuvering speedNot marked. POH Section II and placard.
VLOMaximum speed to extend or retract the gearNot marked. POH Section II and placard.
VLEMaximum speed with the gear extendedNot marked. POH Section II and placard.

VLO and VLE can differ. While the gear is moving, it and its doors are most exposed to the airflow, so in many airplanes the operating speed is lower than the extended speed. Once the gear is down and locked, it can take the higher VLE. Know which number applies before you move the gear handle, and never use the gear as a speed brake above VLO.

Pending: POH Section II

This course has not yet added the F33A's Section II, Limitations, so the limit speeds above are listed without values. Until it does, take them from the airplane's own POH, its placards and its airspeed indicator, and confirm them with your instructor.

Limit or Recommendation?

Interactive

Decide whether each speed is a Section II operating limitation or not.

    A recommended speed can still matter a great deal. The difference is whether exceeding it breaks a rule or the airplane.

    Remember

    Fly the Section IV numbers. Never exceed the Section II numbers.

    The gear speeds are not on the airspeed indicator. Know them cold before your first flight lesson.

    Check Yourself

    Module 2 · F33A Airspeeds · Knowledge Check

    Knowledge Check

    Module 2 Knowledge Check

    Eight questions in the style of your instructor's oral review, each tagged with its source. Pass mark: 80% (7 of 8).

    Score0 / 8