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COMMUNICATIONS MENU Abnormal Operation 1/24 COMMUNICATIONS MENU Abnormal Operation 2/24 This is a demonstration of continuous VHF transmission. You are the pilot non-flying. You are in cruise, everything is normal. Clliicckk oonn tthhee ffoorrwaarrdd aarrrroow ttoo aaccttiivvaattee tthhee ffaaiilluurree.. COMMUNICATIONS MENU Abnormal Operation 3/24 COMMUNICATIONS MENU Abnormal Operation 4/24 No, select MASTER CAUTION pushbutton switch. COMMUNICATIONS MENU Abnormal Operation 5/24 No, select MASTER CAUTION pushbutton switch. COMMUNICATIONS MENU Abnormal Operation 6/24 COMMUNICATIONS MENU Abnormal Operation 7/24 On the E/WD, read the title of the failure. Observe that there are no ECAM actions and that no system page is displayed for this failure. COMMUNICATIONS MENU Abnormal Operation 8/24 The VHF 1 radio is continuously transmitting, the most probable cause for this is a stuck PTT switch. Therefore, check all the PTTs. COMMUNICATIONS MENU Abnormal Operation 9/24 You found one PTT stuck in the “transmit” position. After you release it, the ECAM message disappears. LLeett’’ss nnoow llooookk aatt aannootthheerr ccoommuunniiccaattiioonn ffaaiilluurree.. COMMUNICATIONS MENU Abnormal Operation 10/24 You are still in cruise and everything is back to normal. COMMUNICATIONS MENU Abnormal Operation 11/24 ATC asks you to change frequency. When you look at your RMP, however, all the indications are blank. Notice the ON/OFF switch is ON. RMP 1 COMMUNICATIONS MENU Abnormal Operation 12/24 There is no ECAM caution for this abnormal. The blank displays with no lights illuminated indicate an RMP failure. TTuurrnn ooffff RMP 11.. RMP 1 COMMUNICATIONS MENU Abnormal Operation 13/24 RMP 1 Noo,, sseelleecctt tthhee RMP 11 oonn//ooffff sswiittcchh COMMUNICATIONS MENU Abnormal Operation 14/24 RMP 1 Noo,, sseelleecctt tthhee RMP 11 oonn//ooffff sswiittcchh COMMUNICATIONS MENU Abnormal Operation 15/24 RMP 2 RMP 3 All the radio tuning must now be done using RMP 2 or RMP 3. Seelleecctt VHFF 11 oonn RMP 22.. RMP 1 INOP COMMUNICATIONS MENU Abnormal Operation 16/24 RMP 1 INOP RMP 2 Noo sseelleecctt VHFF 11 oonn RMP 22.. RMP 3 COMMUNICATIONS MENU Abnormal Operation 17/24 RMP 1 INOP RMP 3 Noo sseelleecctt VHFF 11 oonn RMP 22.. RMP 2 COMMUNICATIONS MENU Abnormal Operation 18/24 RMP 2 Notice that the SEL light is illuminated because RMP2 is being used to tune VHF 1. Now let’s look at another failure. RMP 3 RMP 1 INOP COMMUNICATIONS MENU Abnormal Operation 19/24 You are in the left hand seat. While in cruise, you reach a reporting point on your route. You try to transmit to ATC using your side stick PTT, but you receive no reply. COMMUNICATIONS MENU Abnormal Operation 20/24 When you check your ACP, you see that all the lights are extinguished. You try to select VHF 1 for transmission, but your selection has no effect. ACP 1 COMMUNICATIONS MENU Abnormal Operation 21/24 As your were using ACP 1, you can recover audio control through ACP 3 by selecting the CAPT 3 position on the AUDIO SWITCHING selector located on the overhead panel. Swiittcchh ttoo CAPTT 33 ppoossiittiioonn.. INOP ACP 1 COMMUNICATIONS MENU Abnormal Operation 22/24 INOP ACP 1 This selection de-energizes ACP 1. The Captain’s boomset, oxygen mask and hand-mike transmission and reception functions are now controlled through ACP 3. ACP 3 COMMUNICATIONS MENU Abnormal Operation 23/24 INOP ACP 1 The AUDIO 3 XFRD message appears on the EWD to indicate that an audio switching selection has been made. ACP 3 COMMUNICATIONS MENU Abnormal Operation 24/24 In this module, we have looked at the following failures : - a VHF emitting problem, - an RMP failure, - an ACP failure, and how to restore the system to enable continued communication. INOP INOP Moodduullee ccoommpplleetteedd NEXT COMMUNICATIONS MENU Abnormal Operation 25/24 LLIISSTTOOFFSSUUBBJJEECCTTSS EXIT AUDIO GLOSSARY FCOM RETURN VVHHFF11ccoonnttiinnuuoouussllyyeemmiittttiinngg RRMMPPffaaiilluurree AACCPPffaaiilluurree |
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