Aircraft Operations

Part I — Section 4, Chapter 8
I-4-8-5
8.5.1.2.4 Helicopter approach. Helicopter approaches to a runway shall be identified in the same way as fixed
wing approaches, with the Category H included in the minimum box. A helicopter approach to a point in space or a
helipad shall be identified by the navigation aid type used for final approach guidance, followed by the final approach
track. For example:
VOR 235
8.5.1.2.5 Circling approach. When only circling minima are provided on a chart, the approach procedure shall be
identified by the last navaid providing final approach guidance followed by a single letter, starting with the letter A.
When there are two or more approaches at an airport (or a nearby airport), a different letter shall be used. If the IFR
portion of the procedure is the same but there are different circling tracks for the same procedure, only one procedure
with one title should be promulgated and the different circling procedures indicated in the procedure. The suffix letter
shall not be used again for any procedures at that airport, at any other airport serving the same city, or at any other
airport in the same State, serving a city with the same name. For example:
VOR-A
VOR-B
NDB-C
8.5.1.3 Duplicate procedure identification
8.5.1.3.1 A single letter suffix, starting with the letter Z, following the radio navigation aid type shall be used if
two or more procedures to the same runway cannot be distinguished by the radio navigation aid type only. For
example:
VOR Z Rwy 20
VOR Y Rwy 20
8.5.1.3.2 The single letter suffix shall be used as follows:
a) when two or more navigation aids of the same type are used to support different approaches to the same
runway;
b) when two or more missed approaches are associated with a common approach, each approach shall be identified
by a single letter suffix;
c) if different approach procedures using the same radio navigation type are provided for different aircraft
categories; and
d) if two or more arrivals are used to a common approach and are published on different charts, each approach
shall be identified by a single letter suffix. If additional radio navigation aids are required for the arrival, they
shall be specified on the chart’s plan view. For example:
ILS Z RWY 20
ILS Y RWY 20
(“DNA VOR Arrival” shown in the plan view)
(“CAB VOR Arrival” shown in the plan view)
23/11/06