Being Sherlock Holmes

[DakotaHawk]

Have you ever looked at a picture included in someone's post, and put on your Sherlock hat? I find myself doing that - someone posts a picture and then includes a little background about the picture - and then I look for the clues to back up "The Story".

For example...



I included this picture of my panel in another thread, and mentioned that I was descending into Provo airport KPVU. Now, descending into an airport is a pretty boring subject. There's no pizazz!! to such a simple sentence. But after looking at the picture, there's a lot of information that adds to the story.

For example, the radio frequencies are the correct CTAF and ATIS freqs for KPVU after the tower closes at 2100. But the clock on the Dynon says that the time is 2017. Am I on the wrong freq? (No, the clock is showing Pacific Time, but Provo is on Mountain Time).

The transponder shows a pressure alt of 7590ft descending, and the EFIS is showing a descent of about 1000fpm. This backs up the discrepancy between the manifold pressure/prop (12.6"/2400rpm) and the fuel flow of 4.3gph and the speed of 152 IAS/178 mph TAS.

The indicated alt is 7580, and the density alt is showing 10680'. This makes sense based on the temp of 79F. If you look real close, you may be able to see the Kohlsman window is showing almost standard pressure at 29.90.

So Watson... did I miss any clues?

[Casey Stewart]

You reset your G meter recently. I know this because you did a good amount of aerobatics the week prior. The readings would be much higher. You also have a passenger. I know this because i was the passenger

[David Z]

I'm no expert on Dynon avionics, so this could be completely wrong. Based on the yellow range on the tach, I'm guess you have a Hartzell prop with the RPM restrictions.

[Don Jones]

You had a left x-wind shown on the dynons and backed up by the difference of your heading of 160 degrees and a ground track of 168 degrees shown on the trio.

[David Z]

Likely a headwind too, based off the indicated airspeed and groundspeed. Without working it out a 10680' DA and 152kias with a 157kts groundspeed sounds like a headwind.

[Ironflight]

At 22% power, you could pull that red knob back to LOP with not even the remotest potential for engine damage, and get that fuel flow down!

[Bullseye]

Also, you must have been wearing two socks on your left foot that day.

[gasman]

You didn't have your hat on. But you were using your in ear headset.................

[apkp777]

What is your Vno on a -7? Looks like you have it set to about 143 MPH, seems really low?

[DakotaHawk]

Originally Posted by N999ZA

Also, you must have been wearing two socks on your left foot that day.

OK, the ball is offset just a hair to the right, so I may have been resting my left foot on the rudder???

You didn't have your hat on. But you were using your in ear headset.................

I like my QT in-ear headset. Much better sound quality than my Lightspeed ANR.

At 22% power, you could pull that red knob back

Part of my Prelanding checklist - Mixture to full Rich.

10680' DA and 152kias with a 157kts groundspeed sounds like a headwind.

...and the EFIS shows TAS at 178mph...

You had a left x-wind shown on the dynons

I really like this feature - I can find best winds aloft easily.

Based on the yellow range on the tach, I'm guess you have a Hartzell prop

Yep!

You also have a passenger.

...a passenger who was having a blast during an evening flight. RV grin from ear to ear