Kodiak POH (ISA or OAT)?

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1

Good afternoon forum,

Quick question in preparation to start flying the Kodiak. In the POH, specifically the performance section, it gives the the temperature, power, fuel, etc… for a given altitude.

This I am familiar with from other POH’s.

However, all other POH’s I’ve used so far, have given the temperature in a rang, basically

ISA -20C
ISA Standard Day
IS +20C

In the Kodiak, it gives specific temperatures (as shown in the photo). What I am not sure of, is that ISA +5, 15, 25, etc?

Or, is that +5, 15, 25, OAT?

Thanks in advance.

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Topic moved into 3rd Party Aircraft > #third-party-addon-discussion:aircraft

3

It is what it is, nothing standard about it.

Pressure altitude 8000 ft, and that’s just straight up temperature. They are telling you the specific temperature and pressure. I assume they do these sheets for a variety of pressure altitudes?.

Maybe I don’t understand your question? It seems like all the data you need to know is on the sheets.

4

That’s what I thought but was looking for clarification.

To date, I’ve only flown Cessna’s and Beechcraft’s where the POH’s have the various power settings for each pressure altitude based on the OAT being

ISA -20C
ISA Standard Day
IS +20C

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So when filing a flight plan in Simbrief, I would get the average ISA and know where I fell on the charts.

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By the looks of the Kodiak POH, rather than lumping them into 3 categories, it gives the actual Outside Air Temperature (OAT) But just wanted to ensure that is indeed what is going on.

If it is, then from my simbrief example of M007 The OAT at 8,000 feet would be 7 degrees cooler than the ISA temp (-1C)

So from that, I would still use the calculations in the “Standard” range (on the Cessna and Beechcraft charts).

Now in the Kodiak, it appears it is using the actual OAT at each pressure altitude, so just grab the closest to -8c, but just wanted to confirm that is indeed what it is showing.

Thanks.

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5

ISA Standard Temp is +15°C at sea level. So instead of saying ISA + this or ISA - that, they could just as easily say -5°, +15°, and +35°. It appears that whoever wrote the sheet in your last pic actually did that. From the looks of the Kodiak sheet in your first pic, the author just added several more iterations of the calculations so that the pilot doesn’t have to interpolate as much.

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