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Pans_Ops vs Terps

19.01.2007

Submission:

Which main different between PANS-OPS and TERPS

 Xiaomin Zhong

Sichuan airlines

 

Answer or Commentary:

(I.W.

There are significant differences in obstacle clearance criteria between approaches designed in accordance with TERPS (United States Standard for Terminal Instrument Procedure) and PANS-OPS Doc 8168.

 

For example visual circling,

 

TERPS uses a minimum obstacle clearance of 300 feet whereas PANS-OPS uses 394 feet for Category C and D aircraft.

 

Aircraft Category

PANS-OPS Radii from threshold

TERPS Radii from threshold

CAT A

1.68nm

1.30nm

CAT B

2.66nm

1.50nm

CAT C

4.20nm

1.70nm

CAT D

5.28nm

2.30nm

 

Has anyone else got examples of differences?

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