Document ID: chunk:federal_register_of_legislation:F2022C00813:reg:300:p16
Version: federal_register_of_legislation:F2022C00813
Segment Type: reg
Provision Reference: reg 300 (pt 16/27)
Character Range: 112621–115664

be used for design work on a TIFP if the requirements of this section are met.

8.6.2.3              The approach criteria for a TIFP provided for in this section represent minimum design standards that must be complied with.

       Note   Variations to approach designs occasioned by technological change may be presented to CASA and, in the light of aviation safety evaluation, may result in amendment of the MOS or the issue of appropriate instrument.

8.6.3                   Airborne radar equipment and ground radar equipment

8.6.3.1              Airborne radar equipment. An airborne radar system must be used for a TIFP under this section, in accordance with the following requirements:

(a)         range settings for airborne radar approach procedures must maximise the displayed area around the ATP;

(b)         the secondary return from a radar beacon:

(i)            must not obscure the primary return; and

(ii)          must occur behind the primary return; and

(iii)        must not be so remote from the primary return as to cause confusion with a second primary return;

(c)          the primary return must be displayed throughout the radar procedure once established inbound.

8.6.3.2              Ground equipment. Subject to paragraph 8.6.3.1, a radar transponder may be used for a TIFP under this section to assist target identification.

8.6.4                   Flight crew techniques

8.6.4.1              The flight crew techniques mentioned in this paragraph for a helicopter using a procedure must be:

(a)         referred to in the TIFP; and

(b)         included in the operations manual of an operator using the TIFP.

8.6.4.2              Flight crew. Only a multi-pilot operation may use an airborne radar approach TIFP.

8.6.4.3              Radar interpretation, operating tolerances and tracking. The following must be complied with for the use of radar:

(a)         interpretation of radar pictures must be based on the nearest point of the target return;

(b)         distances and flight operating tolerances must be measured from the nearest point of the target return;

(c)          no allowance may be made for beam width error or spot size error;

(d)         allowance must be made for pulse length error;

           Note   For a radar with a pulse length of 2.35 µs [long-range mode] the error will be 700 m [0.38 NM], and for a radar with a pulse length of 0.5 µs [short-range mode] the error will be 150 m [0.08 NM]).

(e)         radar interpretation must be performed by a pilot who:

(i)            has access to all radar controls; and

(ii)          is seated in a position to interpret the radar presentation without significant parallax error;

(f)            operational tolerances interpreted from radar may be rounded up but must not be rounded down;

(g)         radar tracking must be maintained from the VF to the ATP.

8.6.4.4              Radio altimeters. For determining landing minima, fluctuations in measured radio altitude caused by ocean swell may be disregarded if