IR - Attitude Information Display
Figure 013
1EFF : 051-099, 106-149, 204-299, 301-399, 1 34-14-00Page 84 1401-499, 1Config-3 Aug 01/05 1 1 1CES 1 In case of discrepancy detected by the FWC between the pitch or roll attitude information presented on the CAPT and F/O PFDs, a CHECK ATT amber message flashes for a few seconds on both PFDs, then remains steady (item D).
R **ON A/C 005-049, 051-099, 101-149, 151-199, 201-299, 301-399, 401-499,
(2) Heading information
R **ON A/C 051-099, 106-149, 204-299, 301-399, 401-499,
(Ref. Fig. 014)
R **ON A/C 005-049, 051-099, 101-149, 151-199, 201-299, 301-399, 401-499,
The aircraft magnetic or true heading is displayed on the PFD, the ND
and the RMI.
The true heading can be displayed on the CDU.
(a) On the PFD When true heading is displayed, a TRUE white message appears above the heading scale (item A). A blank heading scale (with 10 deg. spaced marks without any indicated value) is provided on the horizon line. The marks are just under this line. This scale moves as the aircraft heading varies. For important nose-up or nose- down, the heading graduations remain at the lower or upper sector limit. Below the sphere, a heading scale provides the pilot with the aircraft actual track and relative selection. This heading scale is graduated every 5 deg. (item A). In case of failure, the heading graduation disappears on the two scales and a red HDG flag appears on the lower heading scale (item B). It flashes for a few seconds, then remains steady. Furthermore, in case of discrepancy detected by the FWC between CAPT and F/O heading indications, with the heading signal valid, a CHECK HDG amber message is displayed at the center of the heading scale (item C).
1EFF : 005-049, 051-099, 101-149, 151-199, 1 34-14-00Page 85 1201-299, 301-399, 401-499, 1Config-3 Aug 01/05 1 1 1CES 1
IR - Heading Information Display on the PFD
Figure 014
1EFF : 051-099, 106-149, 204-299, 301-399, 1 34-14-00Page 86 1401-499, 1Config-3 Aug 01/05 1 1 1CES 1
(b) On the ND
R **ON A/C 051-099, 106-149, 204-299, 301-399, 401-499,
(Ref. Fig. 015)
R **ON A/C 005-049, 051-099, 101-149, 151-199, 201-299, 301-399, 401-499,
The heading data is displayed on the ND in the three following operating modes: ROSE, ARC and PLAN. The ROSE mode and the ARC mode are oriented with respect to the aircraft heading, while the PLAN mode is oriented with respect to the true north.
1 True heading display
_ In ROSE or ARC mode, when true heading is displayed, a cyan TRUE message appears at the top of the ND.
2 ROSE mode (item A)
_ In this mode each pilot has three different sub-modes of presentation on his ND: ROSE-ILS/ROSE-VOR/ROSE-NAV. In the three ROSE sub-modes, the ND provides a display which is similar to that of a conventional HSI, i.e. a rotating heading dial orientated to the North and giving to the pilot the aircraft actual magnetic or true heading with as reference the fixed yellow lubber line at the top of the dial.
3 ARC mode (item B)
_ In this mode, the ND displays a 90 deg. heading sector ahead of the aircraft giving the aircraft actual magnetic or true heading with respect to the fixed yellow lubber line at the top of the scale.
4 PLAN mode
_ The ND displays a static map orientated with respect to the true North.
5 Heading failure (items C and D)
_ In case of heading failure, the scale and all symbols positioned on the ROSE and ARC scales go out of view; a red HDG flag comes into view below the scale after flashing for a few seconds, when the DMC has detected an anomaly concerning the heading parameter.
1EFF : 005-049, 051-099, 101-149, 151-199, 1 34-14-00Page 87 1201-299, 301-399, 401-499, 1Config-3 Aug 01/05 1 1 1CES 1
IR - Heading Information Display on the ND
Figure 015
1EFF : 051-099, 106-149, 204-299, 301-399, 1 34-14-00Page 88 1401-499, 1Config-3 Aug 01/05 1 1 1CES 1 In addition, if a discrepancy between CAPT and F/O sides is detected by the comparison inside the FWCs, the CHECK HDG message is displayed in amber on both NDs (item E).
(c) On the RMI
**ON A/C 051-099,
(Ref. Fig. 016)
R **ON A/C 106-149, 201-299, 301-399, 401-499,
(Ref. Fig. 016A)
R **ON A/C 005-049, 051-099, 101-149, 151-199, 201-299, 301-399, 401-499,
The heading indication is given by a dial which rotates in front
of a fixed index (item A).
In case of heading failure, the fire orange warning flag with the
black HDG inscription comes into view at the top of the compass
card (item B).
For more details, ref. 34-57-00.
(d) On the CDU The time heading can be displayed on the CDU if the DATA DISPLAY selector switch is placed in the HDG position. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM NAVIGATION 导航2(69)
