Instrument Training - Advice
12-21-2019, 08:18 AM
#11
Prime Minister/Moderator
Joined APC: Jan 2006
Position: Engines Turn Or People Swim
Posts: 39,275
Originally Posted by 60av8tor
Free up the gray matter for more important stuff. Reciprocal course for the hold... use +2/-2. Either add or subtract 2 to the first digit and do the opposite - add or subtract 2 to the second digit:
236 inbound: subtract 2, add 2. 056 outbound
058 inbound: add 2, subtract 2. 238 outbound
Obviously reciprocals of headings <180 are fairly easy in your head. You’re merely adding 180. But this trick makes >180 - where you have to subtract 180 - much easier.
236 inbound: subtract 2, add 2. 056 outbound
058 inbound: add 2, subtract 2. 238 outbound
Obviously reciprocals of headings <180 are fairly easy in your head. You’re merely adding 180. But this trick makes >180 - where you have to subtract 180 - much easier.
You only need to memorize increments of ten, the ones digit is obviously always the same for the recip.
12-21-2019, 08:24 AM
#12
Gets Weekends Off
Joined APC: Nov 2011
Position: Volleyball Player
Posts: 3,982
Originally Posted by rickair7777
I found it easier to memorize the reciprocals than do math with ATC yelling in one ear and the engine fire bell in the other.
You only need to memorize increments of ten, the ones digit is obviously always the same for the recip.
You only need to memorize increments of ten, the ones digit is obviously always the same for the recip.
The less brain-processing IMO, the better.
The chart I posted on the previous page can be on a kneeboard and held up/overlayed (or imagined) and you just find which segment the outbound ends up and you instantly know your entry.
But alas, there are plenty of equally valid ways to do these things, it's more about what makes sense to the student and which one they can use repeatedly and reliably.
12-21-2019, 08:44 AM
#13
Prime Minister/Moderator
Joined APC: Jan 2006
Position: Engines Turn Or People Swim
Posts: 39,275
Originally Posted by JamesNoBrakes
Maybe a good idea with an arc-HSI, but why memorize anything with a regular CDI/HSI/HI as found in most GA aircraft?
The less brain-processing IMO, the better.
The chart I posted on the previous page can be on a kneeboard and held up/overlayed (or imagined) and you just find which segment the outbound ends up and you instantly know your entry.
But alas, there are plenty of equally valid ways to do these things, it's more about what makes sense to the student and which one they can use repeatedly and reliably.
The less brain-processing IMO, the better.
The chart I posted on the previous page can be on a kneeboard and held up/overlayed (or imagined) and you just find which segment the outbound ends up and you instantly know your entry.
But alas, there are plenty of equally valid ways to do these things, it's more about what makes sense to the student and which one they can use repeatedly and reliably.
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