Document ID: chunk:federal_register_of_legislation:F2018C00889:reg:22:p3
Version: federal_register_of_legislation:F2018C00889
Segment Type: reg
Provision Reference: reg 22 (pt 3/26)
Character Range: 174344–177260

ft;
(g) for aircraft with a flight crew of 2 pilots — a barometric altitude from 2 independent sources must be displayed, 1 in each pilot's primary field of view;
(h) there must be a means for the flight crew to readily determine:
           (i) the VNAV mode of operation, including establishment or capture of the vertical path; and
 (ii) any mode change or reversion.
       4.2 As an alternative to meeting the system functionality specified in subclause 4.1 for the display and monitoring of vertical deviation, the following functionality may be met: an operational assessment that enables CASA to determine that the pilot flying the aircraft is able to readily distinguish vertical deviation not exceeding plus or minus 75 ft, such that timely corrective action (including a go-round) can be initiated.
       4.3 For subclause 4.2, the operational assessment must include the following:
(a) digital display of vertical deviation;
(b) displays not in the primary field of view;
(c) aural or other warnings or annunciations;
(d) crew procedures and training;
(e) use of flight director or autopilot or both;
(f) flight trials, or other performance indicators, or both of these means of assessment.

5 Operating standards
       The standards for the conduct of Baro-VNAV operations are as follows:
(a) operations must be conducted using an approved local barometric pressure source;
(b) before a Baro-VNAV approach operation may commence, the correct barometric pressure must be set and a method of cross‑checking must be applied;
(c) a stabilised approach must be flown to a DA indicated on an approach chart by an LNAV/VNAV minima;
(d) the flight must limit deviations after the FAF  below the defined vertical path to no more than 75 ft;
(e) a missed approach procedure must be conducted if the vertical deviation after the FAF exceeds 75 ft below the defined vertical path;
(f) any sustained deviations above the defined vertical path must not exceed 75 ft unless the operator determines that a figure greater than 75 ft is appropriate for the aircraft type after taking into account the following:
 (i) aircraft flight characteristics;
           (ii) the effect that any deviation may have on the safe continuation of a stabilised approach;
 (iii) airspeed;
 (iv) energy management;
 (v) aircraft height above ground level;
 (vi) autopilot vertical gain performance.
(g) temperature limitations, as published on the relevant approach chart, must be applied for an aircraft that is:
 (i) operating under a Baro-VNAV authorisation; and
           (ii) equipped with a Baro-VNAV system that does not provide temperature compensation in the determination of the vertical path;
       (h)      temperature limitations need not be applied for an aircraft that is:
 (i) operating under a Baro-VNAV authorisation; and
           (ii) equipped with a Baro-VNAV system that provides temperature compensation in the