Document ID: chunk:federal_register_of_legislation:F2005L04061:body:0:p6
Version: federal_register_of_legislation:F2005L04061
Segment Type: other
Provision Reference: 
Character Range: 14272–17214

approved form for reporting a navigation error or an equipment failure.

       3.2.3.6For CASR 91.5010 (e), if a navigation error has occurred, CASA and the operator may determine the reasons for the apparent deviation from track or altitude and the steps to be taken to prevent a recurrence.

       3.2.3.7Under CASR 91.5015 (1), and for CASR 91.5010, CASA may cancel the RNP 10 operational authorisation if a repeated navigation error may be attributed to a specific piece of navigation equipment.

       3.2.3.8Under CASR 91.5015 (1), and for CASR 91.5010, CASA may cancel a flight crew member's licence if continued errors are being made after remedial action has been completed.

Section 3.3 RNP 10 requirements and definitions for CASR 91.5010

3.3.1 Cross-track and along-track requirements

       3.3.1.1An aircraft operating in RNP 10 airspace must have a maximum cross-track TSE of ±10 NM for 95% of the flight time. This includes positioning error, FTE, PDE and display system error.

       3.3.1.2The maximum along-track TSE is ±10 NM for 95% of the flight time.

    Note   For RNP 10 operational authorisation of aircraft capable of coupling the RNAV system to the flight director or autopilot, navigational positioning error is considered to be the dominant contributor to cross-track and along-track error. FTE, PDE and display system errors are considered to be insignificant for the purposes of authorisation.

3.3.2 Types of errors

       3.3.2.1In this MOS:

display system error includes any of the following:

(a) error components contributed by any input, output or signal conversion equipment used by the display as it presents either position or guidance commands (eg course deviation or command heading);

(b) errors in a course definition entry device;

(c) errors in systems in which charts are incorporated as integral parts of the display.

Note   Display system error necessarily includes charting errors to the extent that they actually result in errors in controlling the position of the aircraft relative to a desired path over the ground. To be consistent, for symbolic displays not using integral charts, any errors in waypoint definition, directly attributable to errors in the reference chart used in determining waypoint positions, are included as a component of this error.

FTE (flight technical error):

(a) means the accuracy with which an aircraft is controlled, measured by the indicated aircraft position in relation to the indicated command or desired position; and

(b) does not include blunder or gross navigation errors (GNEs).

NSE (navigation system error) means the square root of the sum of the squares of the ground station error contribution, the airborne receiver error and the display system error.

PDE (path definition error) mean the difference between the defined path and the desired path at a specific point and time.

PEE (position estimation error) means the difference