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General => The Flight Deck => Topic started by: Tom Seeley on February 21, 2016, 10:30:47 AM

Title: Next Question: What's this?
Post by: Tom Seeley on February 21, 2016, 10:30:47 AM

(http://www.ltaviation.com/images/snowflake.jpg)

This is a symbol that was never on the approach plates when I earned my living flying. For reference, this one is on the VOR/DME-B Approach for Salmon, ID (KSMN).

Anyone know? (This was established by the FAA in October of last year)

Title: Re: Next Question: What's this?
Post by: Daniel Hawton on February 21, 2016, 11:23:37 AM

Quote from: Tom Seeley on February 21, 2016, 10:30:47 AM

(http://www.ltaviation.com/images/snowflake.jpg)

This is a symbol that was never on the approach plates when I earned my living flying. For reference, this one is on the VOR/DME-B Approach for Salmon, ID (KSMN).

Anyone know? (This was established by the FAA in October of last year)

It's a cold temperature restricted airport and indicates a cold temperature altitude correction is required on this approach when the reported temperature is at or below that temperature.

Title: Re: Next Question: What's this?
Post by: Tom Seeley on February 21, 2016, 12:32:36 PM

Yep. Pretty involved complex process for a pilot.

http://www.faa.gov/air_traffic/publications/notices/media/10-15-15-ntap.pdf

Title: Re: Next Question: What's this?
Post by: Don Desfosse on February 21, 2016, 05:35:01 PM

So here's my follow-on question....  And I ask because I couldn't find it but then again that's maybe because I scanned too quickly, I'm still in the lovely fog of Caribbean vacation, or both....  On the table on page 4-GEN-15, are those temperatures in C or F?

Title: Re: Next Question: What's this?
Post by: Tom Seeley on February 21, 2016, 05:46:32 PM

Celsius. AIM 7-2-3

The chart in the 4-GEN-14 left out the legend along the left side.

Title: Re: Next Question: What's this?
Post by: Don Desfosse on February 21, 2016, 06:04:07 PM

Cool, thanks.