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ac 91-003 srvsop - ICAO

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SRVSOP AC <strong>91</strong>-<strong>003</strong><br />

Paragraph Functional requirements Explanation<br />

c) The means to show the<br />

following items, either on the<br />

primary field of view of the<br />

pilots, or on a readily<br />

<strong>ac</strong>cessible page display [e.g.,<br />

on a multi-function control<br />

display unit (MCDU)]:<br />

d) The capability to execute the<br />

“direct to” function.<br />

e) The capability for automatic<br />

leg sequencing, displaying<br />

the sequence to the flight<br />

operations where the minimum flight crew is two<br />

pilots, means will be provided for the pilot not<br />

flying (PNF) the aircraft or monitoring pilot (MP)<br />

to check the desired path and the position of the<br />

aircraft relative to that path;<br />

2) A navigation database containing current<br />

navigation data officially issued for civil aviation,<br />

which can be updated in <strong>ac</strong>cordance with the<br />

aeronautical information regulation and control<br />

(AIRAC) cycle and from which ATS routes can<br />

be retrieved and loaded into the RNAV system.<br />

The stored resolution of the data must be<br />

sufficient to <strong>ac</strong>hieve negligible path definition<br />

error (PDE). The database must be protected<br />

against flight crew modification of the stored<br />

data;<br />

3) The means to display to the flight crew the<br />

period of validity of the navigation database;<br />

4) The means to retrieve and display the data<br />

stored in the navigation database relating to<br />

individual waypoints and NAVAIDs, to enable<br />

the flight crew to verify the route to be flown;<br />

and<br />

5) The capability to load on the RNAV system,<br />

from the navigation database, the complete<br />

RNAV segment of the SIDs or STARs to be<br />

flown.<br />

Note.- Due to variability in RNAV systems, this document<br />

defines the RNAV segment from the first occurrence of a named<br />

WPT, tr<strong>ac</strong>k or course up to the last occurrence of a named<br />

WPT, tr<strong>ac</strong>k or course. Legs or segments prior to the first named<br />

WPT or after the last named WPT must not be loaded from the<br />

navigation database.<br />

1) The <strong>ac</strong>tive navigation sensor type;<br />

2) The identification to the <strong>ac</strong>tive (TO) waypoint;<br />

3) The ground speed or time to the <strong>ac</strong>tive (TO)<br />

waypoint; and<br />

4) The distance and bearing to the <strong>ac</strong>tive (TO)<br />

waypoint.<br />

Note.- When the CDU/MCDU is used to support precision<br />

checks by the pilot, said CDU/MCDU must have the capability of<br />

displaying lateral deviation with a resolution of at least 0.1 NM.<br />

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