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Old 12th December 2007 | 18:30
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punchus
 
Joined: Dec 2003
Posts: 26
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From: 30 West
Obtstacle Clearance on Departure

Lets assume a departure from a runway with no published SID no emer/compulsory turns published.
Two scenarios:
In the first you are cleared under radar control to take off and turn in excess of 90 degrees when ready to a down route point. (Atc responsible for terrain issues)
In the Second you are cleared as above but the radar is u/s.(procedural)
The question is from a terrain point of view does your performance keep you clear of terrain if you climb straight ahead until above MSA before commencing your turn?
If this is the case at what point do performance figures no longer clear you of obstacles. Is it MFRA or MSA?
Assume in both cases no obstacles intrude into the swept path for departures since there are no Emer/Compulsory turns.
Long Winded question I know but any info and references from the performance gurus would be much appreciated!
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