Interview question

[av8orboy]

I was asked this question a few years ago at an interview and never found the answer. Here it goes, What is considered mountainous terrain?

 

[TimsKeeper]

Off the top of my head, I know what clearances you would be assured of....2000' for 4 nautical mile width, but I don't know exactly the criteria to warrant that.


Tank-u come again!

 

[SiuDude]

Designated mountainous areas are defined in far 95.

 

[Barnowl]

The only place I've ever seen it "defined" was in the AIM. Its not really a very good definition, but its what we used to use. Here's the link....Has any one else seen it defined anywhere else?


http://www.faa.gov/ATpubs/AIM/Chap5/aim0506.html#5-6-5

 

[typhoonpilot]

United used to ask the question in relation to Jeppessen charts and when they started to do that brown contouring for mountainous areas. I believe the answer was 4000 feet above field elevation, but I don't have a Jepp legend handy to check.

TP

 

[av8orboy]

United used to ask the question in relation to Jeppessen charts and when they started to do that brown contouring for mountainous areas. I believe the answer was 4000 feet above field elevation, but I don't have a Jepp legend handy to check.

TP

United is the company that asked me the question. I think I answered something along those lines. The only reason I said that is I know that a mountain is anything over 4,000’. But I figured the feds would have so other super complicated definition.

 

[typhoonpilot]

Just did a trip so I dug into the onboard Jepp Text. Here are the answers.

Mountainous Area ( ICAO ) = An area of changing terrain profile where the changes of terrain elevation exceed 3000 feet within a distance of 10 Nautical Miles.

From the Approach chart legend: Generalized terrain contour information may be depicted when terrain within the approach chart planview exceeds 4000 feet above airport elevation, or when terrain within 6 NM of the Airport Reference Point rises to at least 2000 feet above the airport elevation.

TP

 

[trip]

I thought there was a map in the Jepp legend that showed mountainous terrain?

 

[viper548]

I thought there was a map in the Jepp legend that showed mountainous terrain?

That's what I thought too. It's in the AIM also

 

['72Gremlin]

http://ecfr.gpoaccess.gov/cgi/t/text/text-idx?c=ecfr&sid=b55ffb565b3a7b73a27ea3b0b9f8bd8f&rgn=div5&view=text&node=14:2.0.1.3.12&idno=14#14:2.0.1.3.12.2.9.1

This came up today. I always thought mountainous terrain was any terrain that was above 2000' MSL. I think that was an oversimplification.