all previous editions of Doc , Volume I. Doc OPS/ Procedures for. Air Navigation Services. International Civil Aviation Organization. Volume I. PANS-OPS (Doc ): It is one of three documents issued by ICAO to provide additional recommendations of aspects of aircraft operations. specified in this document should be notified and take effect in accordance Aircraft Operations (PANS-OPS, Doc ), Volume I,. Part VIII.

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This is believed to have been a major factor in the following fatal accident, which resulted in considerable loss of life: It is therefore essential that pilots understand these differences and are aware of the basis of calculations for all airfields at which they intend to operate, including alternates. These distances, dependent on aircraft category, are also based on the circling altitude which accounts for the true airspeed increase with altitude.

The boundaries of protected airspace for circling approaches are defined by arcs drawn from the threshold of each runway at an airport. B, vicinity Busan Korea, Table 1 shows the lowest value of visibility assumed by each method:.


From May 2,the FAA started publishing new instrument approach plates that include an enlarged segment of airspace to protect aircraft during circling approaches. The higher the speed of the aircraft, the larger the arc.

Circling Approach – difference between ICAO PANS-OPS and US TERPS – SKYbrary Aviation Safety

Additionally, pilots not aware of the increased bank angle expected in US TERPS calculations might, in certain jeppesenn, stray outside the circling area due dkc the increased circling radius.

For details refer to the relevant documents listed below. Retrieved from ” https: Charts without the new designation will continue to be guided by the old, smaller-radii criteria.

This information typically consists of approach and departure procedures which assure safe separation between the aircraft and known obstacles located close to the intended flight path of the procedure in question.

The Airline Pilots Forum and Resource

National authorities or operators may require adjustments to be applied to operating minima to compensate for these differences. If you wish to contribute or participate in the discussions about articles you are invited to join SKYbrary as a registered user.

This is especially true in respect of Circling Approaches where the assumed radius of turn and minimum obstacle clearance are markedly different see below. These values are calculated differently and therefore, may result in different AOM. Terminal Procedures and Jeppesen both plan to use new chart symbology to identify the updated approaches. Aerodrome operating minima AOM are calculated by operators based on information supplied by national authorities in their AIPs.


The procedures themselves are based on obstacle clearance domains constructed using internationally accepted standards. Jeppesen Chart Basics – a presentation.

The circling approach area has been expanded to provide improved obstacle protection. Under the new criteria that radius will increase by 65 percent, odc 2.

The new airspace also offers pilots additional obstacle clearance while considering their MSL altitude above the MDA, which affects true airspeed. The latter is shown on Table The basis for calculation of minima is usually printed on the approach plate see Further Reading: As a result, circling minima at certain airports may increase significantly.

Both systems assume a 25 kt