ATRpilot From , joined Dec 1969, posts, RR: Reply 1, posted (13 years 7 months 3 weeks 2 days 7 hours ago) and read 864 times:
SID's and STAR's exist primarily to cut down on frequency congestion and pilot/controller workload. If everyone is playing from the same sheet of music and knows what is going to happen, then it makes life simpler for everyone involved.
Example of a clearence without SID's and STAR's from memphis to st. louis:
KMEM direct MAW direct CGI CGI 335 degree radial to QBALL then STL 156 degree Radial to CHIKN direct KSTL.
Example of a clearence with SID's and STAR's (same route):
Memphis 5 depature MAW QBALL 3 arrival KSTL
See the differance? Lots easier for both parties involved.
The FAA decides which airports will have SID's and STAR's, then after a period of industry review they are put into use.
Oh yeah.. almost forgot! SID's are called DP's now (Departure Procedures). Old habits die hard.
Pilot1113 From United States of America, joined Aug 1999, 2333 posts, RR: 12 Reply 6, posted (13 years 7 months 1 week 6 days 18 hours ago) and read 748 times:
Damn it all! Just as I was beginning to learn about instrument flying.
It's like the time when I tried to file a flight plan for a PA161-28 (Piper Warrior). The FSS guy didn't know what I was talking about because they changed it to P28A! Glad I was notified about that one... I only found out about that after reaching another FSS guy.