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 (23) The table below gives the conditions of display of the attitude flags:
 -------------------------------------------------------------------------------| FLAGS | DISPLAY | |--------------------|--------------------------------------------------------| | ATT | Red flag replacing the whole attitude display when | | | attitude is invalid, flashing during 9s then steady. | | | This flag disappears when DMC is supplied again with | | | healthy pitch and roll data. | |--------------------|--------------------------------------------------------| | FPV | Red flag under initial position of horizon line (has a | | | steady position and does not follow pitch and roll | | | variations). It is displayed in TRK/FPA mode when | | | attitude is valid but drift angle or flight path angle | | | are not valid. | | | This flag flashes 9s then steady. | |--------------------|--------------------------------------------------------| | FD | Red flag in left upper corner of upper sector of pitch | | | scale. It is displayed when FD pushbutton switch light | | | is on on FCU, attitude is valid and not excessive, and | | | besides, both FMGC are seen invalid or both FD are | | | disengaged. |
R 1EFF : 106-149, 303-399, 401-499, 1 31-64-00Page 74 1 1 Aug 01/05 1 1 1CES 1 -------------------------------------------------------------------------------| FLAGS | DISPLAY | |--------------------|--------------------------------------------------------| | | This flag flashes during 9s then is steady. | |--------------------|--------------------------------------------------------| | CHECK ATT | Amber message under upper limit of upper sector of | | | pitch scale. It is displayed when there is attitude | | | discrepancy between CAPT and F/O PFD or discrepancy | | | between input and displayed pitch or roll. | | | This flag flashes during 9s then is steady. | |--------------------|--------------------------------------------------------| | SI | Red flag instead of lateral acceleration index when | | | lateral acceleration is invalid on the ground or | | | estimated side slip and lateral acceleration are | | | invalid in flight. | | | This flag flashes 9s then steady. |--------------------|--------------------------------------------------------| | RA | Red flag on the lower sector when both radio altimeters| | | are invalid, altitude is not excessive | | | This flag flashes 9s then steady. | |--------------------|--------------------------------------------------------| | DH | Amber message in lower part of attitude scale when | | | attitude is not excessive, DH and RA are both valid | | | and DH>RA. | | | This flag flashes during 9s then is steady. | |--------------------|--------------------------------------------------------| | CHECK PFD CAPT | Amber message above the attitude zone or above the | | | heading scale. | | CHECK ND CAPT | It is displayed when there is a discrepancy between | | CHECK PFD FO | what is computed by the DMC and what is displayed on | | CHECK ND FO | the related PFD (ND,EWD,SD). | | CHECK EWD | This message flashes for 9s then is steady. |

 **ON A/C 001-049, 051-099, 101-105, 151-199,
 | W/S AHEAD | Red message above the A/C symbol (left part) displayed | | | when a predictive W/S level 3 alert is computed. | | | The message is amber if the alert is of level 2. |
R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 31-64-00Page 75 1303-399, 401-499, 1Aug 01/05 1 1 1CES 1 **ON A/C 106-149, 201-299, 301-399,

 -------------------------------------------------------------------------------| FLAGS | DISPLAY | |--------------------|--------------------------------------------------------| | WINDSHEAR | Red message above the A/C symbol (left part). | | | It is displayed when a windshear condition is detected | | | It appears for at least 15 s. |
 **ON A/C ALL
 | WINDSHEAR | Red message above the A/C symbol (left part). | | | It is displayed when a windshear condition is detected | | | This message flashes 9s then steady. | | | It appears for at least 15 s. |

R **ON A/C 001-049, 101-149, 151-199, 303-399, 401-499,
 | W/S AHEAD | The message above the A/C symbol (left part) flashes | | | for 9s then steady if a predictive windshear condition | | | is detected, and in the following main conditions: | | | - WXR unit with winndshear function installed | | - windshear P/B SW on (AUTO/OFF P/B SW on WXR control | | | unit) | | - valid WXR | | | - no reactive windshear condition. | | | The message is : | | | - amber for a level 2 alert | | | - red for a level 3 alert. |
 1EFF : ALL 1 31-64-00Page 76 1 1 Aug 01/05 1 1 1CES 1 **ON A/C ALL

 B. Heading

R **ON A/C 106-149, 303-399, 401-499,
 (Ref. Fig. 036)
 **ON A/C ALL
 item (a)
 The heading scale presents the aircraft actual magnetic heading in analog
 form.

 (1) Scale description
 **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
　
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