Cross Controlled Stalls
Written by Jack on May 31st, 2008
| Objective: |
To show the effect of improper control technique and to emphasize the importance of using coordinated control pressures whenever making turns. |
| Content: |
Before Flight:
- Occurs with controls crossed and excessive back elevator pressure is applied
- Most likely during correction of overshot runway on turn to final by inexperienced pilots
- In a right turn:
- Right rudder used to turn airplane rather than ailerons to avoid any increase in bank
- As outside (left) wing produces more lift, airplane banks right and pilot applies opposite (left) aileron pressure to correct this and back elevator pressure to raise nose
- Inner (right) wing’s camber is increases and therefore at a very low speed it can no longer produce lift
- Right wing stalls and left wing continues to produce lift, resulting in a snap-roll to the right
During Flight:
- Airplane must be at a safe altitude for a spin as this may develop
- Instructor will first demonstrate, followed by student’s execution of the maneuver
- Flaps should not be extended, but airplane should otherwise be in landing configuration
See AFH C. 4-3 to 4-12 |
| Completion Standards: |
The lesson is complete when the student is able to perform cross-controlled stalls to the satisfaction of the instructor and in accordance with the current Practical Test Standards for the student’s stage of training. |
Posted in CFI Lesson Plans |
It is the opinion of many CFI’s that this procedure is limited to CFI applicant training only and not appropriate for pre-solo student pilots. The privat applicant must be able to explain the aerodynamics of a spin and the situations that may lead to a spin. Crossed control stals is one.
Your Comments please.
I do not agree: I show private applicats spins whenever I am sure they will not be scared off. I show ALL post solo students cross controll stalls and full flap power on stalls.
Whenever I fly a 172 I will at least once grab another peson to ride along in the back seat and when you perform full flap power on stalls in the 172 with the rear seat loaded you will find out just how hard a 172 can bite; the 172 is quite a handfull under the above circumstances I assure you. It will surprise you if you have never done a full flap power on stall with the rear seat occupied.
Students get to see just how bad things could get in a go around situation in a loaded plane that they stall close to the ground.
It is the opinion of THIS CFI that turning stalls and crossed control stalls are fundamentally necessary for student pilots. If we allow ourselves to spare student pilots from maneuvers that “may induce” spin, then we should stop teaching power-on stalls too. The first thing most student pilots do when alone in the airplane is to fly a traffic pattern where the base to final turn awaits–how then is it logically prudent to omit the training that pertains to the flight undertaken when a pilot is least experienced and most likely to apply incorrect control inputs?
I am most concerned about the comment from November 2009, I trust that the author was not flying the C172 OUTSIDE of the utility catagory! The “BITE” that was expressed may very well be from the fact that the aircraft was outside of the approved category,
PTC