stealthguitar

Had an interview the other day and was stumped on a couple jepp chart questions. I don't use these in the part 91 flying I do now but I did look pretty hard at my jepp commercial/instrument manual before the interview and I downloaded/searched all 30 jeppesen chart clinic PDF's and haven't found the answers.

So here we go:
1. What do the small "x" s mean on the overhead (plan) view of the approach plate? I think it was on an approach int Oakland CA or SFO and there was a line of these x's on there.

2. MORA's on the lo charts (1 and 2 in particular around portland) have red numbers but most others are blue. Do the red MORA's indicate mountainous terrain or what? I found this blurb from 11dec issue of the jepp clinic but it doesn't say anything more about red vs blue numbers:

On Jeppesen charts, all MORA altitudes which are
6,000 feet or lower have an obstacle clearance of
1,000 feet. If the MORA altitudes are 7,000 feet
or greater, the obstacle clearance is 2,000 feet.

Thanks.

freezingflyboy

I believe the small x's you are referring to on the approach planviews are non-compulsory airspace fixes. Usually a fix where theres a dog leg or 2 routes come together to join a course to a fix. I guess if the x's were along a published course, thats what they were. If you are talking about the symbols that look like a plus sign with a line under it (+) and they are out by themselves, those are obstacles of unverified height.

The red MORAs are MORAs that are above 14,000 feet. Green MORAs are anything below 14,000 feet.

Hope the interview went ok. Just curious, where was the interview at?

stealthguitar

Thanks. Now I'll be able to sleep a little better (I didn't get the job). Anywhere else a part 91 NOS user can look for more Jepp info besides where I've already looked?

freezingflyboy

I would say find someone who uses Jepps and get a hold of the chart legend or maybe buy a cheap set of Jepps that comes with the chart legend. As far as interview prep, that whole section is GOLD. It has all the symbols you could ever come across on a Jepp approach chart, enroute chart here in the US and a few countries that use different symbology (Australia is one I remember).

hotelmode

Jepp publishes a great little book with all(at least most) of the symbology. You can buy the little book, or you can buy some jepp's, the same information is given with the plates. It covers approach plates and low/high en route charts.

stealthguitar

This it?:
http://www.jeppesen.com/wlcs/applica...t_type=details

I don't know anyone that has jepps so I'm out of luck there. I'm trying to save my nickels here if I can.
Thanks for the ideas though.

EMB120IP

On the MORA's, in mountainous terrain you get 2000ft buffer, and so on. I believe to determine if you are in mountainous terrain, the AIM has a depiction of the mountainous terrain mapped out, and Jepp also gives the same depiction in their chart handouts. That's the first time I've heard about the "above 7000 feet" thing. Who knows. You learn something new everyday.

freezingflyboy

That might have what you're looking for, I'm not sure though. The chart legend comes with any set of charts you buy from Jeppesen. I'd scan and send you mine but its a few hundred pages. Honestly, I don't know the best way to get your hands on something like that without getting a hold of a set of Jepps. I did some snooping on Google and seems like most of the places that had stuff like that are either no longer around (copyright issues maybe?) or only deal in NOS stuff (probably since it's public domain).

stealthguitar

Found the "above 7000 feet thing" here if you want to read more about it (dec98 issue):
http://www.jeppesen.com/wlcs/index.j...tions_aopa.jsp

Now I'm a bit confused myself. What does the AIM say about mountainous terrain? I was asked "how do you define mountainous terrain?" in relation to this red/green MORA thing and needless to say I was stumped. There is no real definition of this worldwide (http://en.wikipedia.org/wiki/Mountain) was my answer to be "it is mountainous when the numbers are red and not mountainous when they are green"? Slap me sideways if that was the right answer.

stealthguitar

Hey that's an awesome gesture thanks but yeah, that's a lot of scanning. I'll keep searching and will make some calls tomorrow. I want to say that I'll be okay reading though the chart clinic and my inst/comm book (most people say they are for their interviews if they've not used jepps before) but I have the worst luck so I want to be better prepared this time.

I appreciate it though freezeingflyboy.