Scanning -

1.  Attitude + Power  = Performance
2.  Instrument Scanning -
1. Inverted V
2. Circular Scan 
3. Hub and Spokes

Inverted V Scan

Cross Checking / Scanning  Inverted V

1. Step 2 - Scanning the Turn Coordinated (TC) and Vertical Speed Indication (VSI) in an inverted V pattern. 
1. The TC and VSI are fine -tuners because of their sensitivity.
1. TC will show a turn before the heading indicator
2.  VSI will show a climb or descent before altimeter
2. Scan should move at a slow speech rate " and one and two and one and two..  that is how fast your eyes should move.
1. when you say "and"  look at the AI; when you say "one" look a the TC; when oyu say "two" look at the VSI
3. Key information while using the inverted V scan is trend of motion information, rather than specific numbers
1. Is the airplane doing what you want it to do? - Turning, flying level, climbing or descending?

Cross-Checking / Scanning Validating Instruments 

Second priority is to validate the AI – Think in terms of aircraft systems 
You are comparing electrical (TC) and vacuum bank information (AI), and you are comparing static-air (VSI) and vacuum pitch information (AI) 

If a bank or pitch disagreement exists, look to an independent bank or pitch system in order to resolve the conflict 

– To resolve bank conflicts, use the magnetic compass. It will agree with either the AI or the TC The instrument that disagrees is the problem. You cannot use the heading indicator unless you check the suction gauge and confirm proper operation of the vacuum system

 – To resolve pitch conflicts, use the alternate static air system, air speed indicator and the altimeter Pitch will agree with either the AI or the VSI The instrument that disagrees is not reliable If static problem - you can’t use the altimeter or airspeed indicator, unless you replace the normal static-air system with the alternate static-air system if you have one, as it feeds from the same source 

When a pitch or bank conflict develops, stop for a few seconds, and use system analysis to resolve the problem – False assumptions can result in loss of control Bank conflict Pitch conflict


Radial Scan

Step Three - Scan the other “six-pack” instruments 

• – These are the tertiary instruments 
• – Scan using the same slow eye movement as in the inverted V scan 
• – Scan the instruments that have the numbers that you are trying to maintain 
• Focus is on the important numbers  -The Quantitative information
• Are you complying with ATC, your intentions / desires, what the nav charts require? 

– If you do not like what you see, 
Return to Step One and change attitude and /or power 
Return to Step Two for trend of motion and for AI validation 
Return to the radial scan (Step Three) for the numbers 


http://slideplayer.com/slide/9608807/