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Alt 12.02.2003, 23:31   #7
MarkusV
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Standard Re: 767PIC: Overfly-Wpts / Pitot

Hi Felix,

we started using English, so I'll just continue. Just in case that no everyone in this thread might be familiar with German.

> Gibt es in der 767 diese Möglichkeit auch?

This applies to all "heavy" Boeings (747, 757, 767, 777) with Honeywell-manufactured FMCs: the answer is "no". On the Honeywell FMC box, the pilot does not have the ability to change a waypoint type from fly-by to fly-over or from fly-over to fly-by. Indeed, this can be done by a button on the e.g. Airbus MCDU.

> Und wenn nein, wie programmiert ihr dann Anflüge wie zum
> Beispiel Standardanflüge auf EDDL, EDLW, EDLP, EDDK, EHAM
> ein, bei denen z.B. von einem VOR von einem Flughafen weg
> geflogen wird bis zu einer bestimmten DME, und dann ein ca.
> 150° Turn auf den Final nötig ist? Oder diverse Missed
> Approaches?

The trick is - you don't.

If it's a standard approach it has already been pre-programmed by our NavData base supplier (e.g. Jeppesen or Aerad). The point is: pre-programmed approach, arrival and departure procedures are different from manually programmed procedures!

Pre-programmed procedures from the database
- are more precise: position accuracy is 0.001' vs. 0.1' for pilot-entered waypoints
- may contain conditional (!) waypoints which cannot be entered by the pilots
- do contain fly-by/fly-over information in the Nav-Database. This cannot be changed by the pilot

So, if it's a published approach, either precision or non-precision, you do load the approach from the NavDatabase instead of entering the waypoints yourself. Please note that the electronically coded procedures MIGHT be different from the charted procedure. Also, in some cases, e.g. a recently modificed procedure might not yet be coded into the database so it's either manual programming or raw data flying for the flight crew.

The Big Boeing FMC User's guide (http://www.fmcguide.com/) contains excellent details on this subject. In Germany, it can be ordered e.g. through Aerosoft in Paderborn. It's a must for the serious pilot!

Markus
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