Timeline/ANDS-NIO/0238:51 MYT
Event Summary
Malaysia Airlines ODC sent a test message to MH370, requesting an acknowledgement. The message was also re-transmitted at 0239:52 MYT, 0240:42 MYT and 0241:52 MYT. The automated response was 'failed'.
Event Details
ACARS Traffic Log for MH370 (9M-MRO)
Malaysia Airlines ODC sent a test message to MH370, requesting a response. The message content is shown below, followed by a transcript of the transmissions.
The incoming downlink showed that the message failed. The same message was automatically retransmitted several times with the same (failed) response.DEAR MH370. PLS ACK TEST MSG. RGDS/OC.
ACARS Traffic Log for MH370 (9M-MRO)
Time
18:38:51Trans
46820392Direction
Outgoing UplinkAN
9M-MROFI
MH0370Medium
KULMachine
MHKULKJACM001Raw DTG
071838SMI
CMDApplication
RELAYStatus
Uplink SentMessage Type
B777 Cockpit MCDU Display Uplink -- B777 Cockpit Display Uplink v1Source/Destination
BKKXCXAQU BKKXCXA
.DPCCAMH 071838
CMD
AN 9M-MRO/FI MH0370/GL KUL/MA 992I
- QUDPCCAMH~1DIS01071838
MESSAGE:
DEAR MH370. PLS ACK TEST MSG. RGDS/OC.
Time
18:38:51Trans
46820392Direction
Outgoing GroundAN
9M-MROFI
MH0370Medium
KULMachine
MHKULKJACM001Raw DTG
071838SMI
CMDApplication
BATAPCNXStatus
RoutedMessage Type Source/Destination
BATAP_TO_MSWQU BKKXCXA
.DPCCAMH 071838
CMD
AN 9M-MRO/FI MH0370/GL KUL/MA 992I
- QUDPCCAMH~1DIS01071838
MESSAGE:
DEAR MH370. PLS ACK TEST MSG. RGDS/OC.
Time
18:38:51Trans
46820392Direction
Outgoing GroundAN
9M-MROFI
MH0370Medium
KULMachine
MHKULKJACM001Raw DTG
071838SMI
CMDApplication
FILECNXStatus
Ground SentMessage Type
B777 Cockpit MCDU Display Uplink -- B777 Cockpit Display Uplink v1Source/Destination
D:\output\Flight Operation\ODC\B777\07-03-2014.CSVQU CPYXXXX
.DPCCAMH 071838
CMD
AN 9M-MRO/FI MH0370/GL KUL/MA 992I
- QUDPCCAMH~1DIS01071838
MESSAGE:
DEAR MH370. PLS ACK TEST MSG. RGDS/OC.
ACARS Traffic Log for MH370 (9M-MRO)
Time
18:39:52Trans
46820392Direction
Outgoing UplinkAN
9M-MROFI
MH0370Medium
KULMachine
MHKULKJACM001Raw DTG
071839SMI
CMDApplication
RELAYStatus
RetransmittedMessage Type
B777 Cockpit MCDU Display Uplink -- B777 Cockpit Display Uplink v1Source/Destination
BKKXCXAQU BKKXCXA
.DPCCAMH 071839
CMD
AN 9M-MRO/FI MH0370/GL KUL/MA 992I
- QUDPCCAMH~1DIS01071838
MESSAGE:
DEAR MH370. PLS ACK TEST MSG. RGDS/OC.
Time
18:39:52Trans
46820392Direction
Outgoing GroundAN
9M-MROFI
MH0370Medium
KULMachine
MHKULKJACM001Raw DTG
071839SMI
CMDApplication
BATAPCNXStatus
RoutedMessage Type Source/Destination
BATAP_TO_MSWQU BKKXCXA
.DPCCAMH 071839
CMD
AN 9M-MRO/FI MH0370/GL KUL/MA 992I
- QUDPCCAMH~1DIS01071838
MESSAGE:
DEAR MH370. PLS ACK TEST MSG. RGDS/OC.
Time
18:40:04Trans
46820392Direction
Incoming DownlinkAN
9M-MROFI
MH0370Medium Machine
MHKULKJACM001Raw DTG
071840SMI
MASApplication
RELAYStatus
NormalMessage Type
MAS-F (failed)Source/Destination
BKKXCXAQU DPCCAMH
.BKKXCXA 071840
MAS
AN 9M-MRO/MA 992F
- NO ACK 311
ADDRESSEE: 9M-MRO
QU BKKXCXA
.DPCCAMH 071838
CMD
AN 9M-MRO/FI MH0370/GL KUL/MA 992I
- QUDPCCAMH~1DIS01071838
MESSAGE:
DEAR MH370. PLS ACK TEST MSG. RGDS/OC.
KNO 1
ACARS Traffic Log for MH370 (9M-MRO)
Time
18:40:42Trans
46820392Direction
Outgoing UplinkAN
9M-MROFI
MH0370Medium
KULMachine
MHKULKJACM001Raw DTG
071840SMI
CMDApplication
RELAYStatus
RetransmittedMessage Type
B777 Cockpit MCDU Display Uplink -- B777 Cockpit Display Uplink v1Source/Destination
BKKXCXAQU BKKXCXA
.DPCCAMH 071840
CMD
AN 9M-MRO/FI MH0370/GL KUL/MA 992I
- QUDPCCAMH~1DIS01071838
MESSAGE:
DEAR MH370. PLS ACK TEST MSG. RGDS/OC.
Time
18:40:42Trans
46820392Direction
Outgoing GroundAN
9M-MROFI
MH0370Medium
KULMachine
MHKULKJACM001Raw DTG
071840SMI
CMDApplication
BATAPCNXStatus
RoutedMessage Type Source/Destination
BATAP_TO_MSWQU BKKXCXA
.DPCCAMH 071840
CMD
AN 9M-MRO/FI MH0370/GL KUL/MA 992I
- QUDPCCAMH~1DIS01071838
MESSAGE:
DEAR MH370. PLS ACK TEST MSG. RGDS/OC.
Time
18:41:14Trans
46820392Direction
Incoming DownlinkAN
9M-MROFI
MH0370Medium Machine
MHKULKJACM001Raw DTG
071841SMI
MASApplication
RELAYStatus
NormalMessage Type
MAS-F (failed)Source/Destination
BKKXCXAQU DPCCAMH
.BKKXCXA 071841
MAS
AN 9M-MRO/MA 992F
- NO ACK 311
ADDRESSEE: 9M-MRO
QU BKKXCXA
.DPCCAMH 071839
CMD
AN 9M-MRO/FI MH0370/GL KUL/MA 992I
- QUDPCCAMH~1DIS01071838
MESSAGE:
DEAR MH370. PLS ACK TEST MSG. RGDS/OC.
KNO 1
ACARS Traffic Log for MH370 (9M-MRO)
Time
18:41:52Trans
46820392Direction
Outgoing UplinkAN
9M-MROFI
MH0370Medium
KULMachine
MHKULKJACM001Raw DTG
071841SMI
CMDApplication
RELAYStatus
RetransmittedMessage Type
B777 Cockpit MCDU Display Uplink -- B777 Cockpit Display Uplink v1Source/Destination
BKKXCXAQU BKKXCXA
.DPCCAMH 071841
CMD
AN 9M-MRO/FI MH0370/GL KUL/MA 992I
- QUDPCCAMH~1DIS01071838
MESSAGE:
DEAR MH370. PLS ACK TEST MSG. RGDS/OC.
Time
18:41:52Trans
46820392Direction
Outgoing GroundAN
9M-MROFI
MH0370Medium
KULMachine
MHKULKJACM001Raw DTG
071841SMI
CMDApplication
BATAPCNXStatus
RoutedMessage Type Source/Destination
BATAP_TO_MSWQU BKKXCXA
.DPCCAMH 071841
CMD
AN 9M-MRO/FI MH0370/GL KUL/MA 992I
- QUDPCCAMH~1DIS01071838
MESSAGE:
DEAR MH370. PLS ACK TEST MSG. RGDS/OC.
Time
18:42:22Trans
46820392Direction
Incoming DownlinkAN
9M-MROFI
MH0370Medium Machine
MHKULKJACM001Raw DTG
071842SMI
MASApplication
RELAYStatus
NormalMessage Type
MAS-F (failed)Source/Destination
BKKXCXAQU DPCCAMH
.BKKXCXA 071842
MAS
AN 9M-MRO/MA 992F
- NO ACK 311
ADDRESSEE: 9M-MRO
QU BKKXCXA
.DPCCAMH 071840
CMD
AN 9M-MRO/FI MH0370/GL KUL/MA 992I
- QUDPCCAMH~1DIS01071838
MESSAGE:
DEAR MH370. PLS ACK TEST MSG. RGDS/OC.
KNO 1
Time
18:43:33Trans
46820392Direction
Incoming DownlinkAN
9M-MROFI
MH0370Medium Machine
MHKULKJACM001Raw DTG
071843SMI
MASApplication
RELAYStatus
NormalMessage Type
MAS-F (failed)Source/Destination
BKKXCXAQU DPCCAMH
.BKKXCXA 071843
MAS
AN 9M-MRO/MA 992F
- NO ACK 311
ADDRESSEE: 9M-MRO
QU BKKXCXA
.DPCCAMH 071841
CMD
AN 9M-MRO/FI MH0370/GL KUL/MA 992I
- QUDPCCAMH~1DIS01071838
MESSAGE:
DEAR MH370. PLS ACK TEST MSG. RGDS/OC.
KNO 1
Notes
- This Test Message from Malaysia Airlines Operations Centre was re-transmitted at the following times:-
- 1839:52 UTC (0239:52 MYT)
- 1840:42 UTC (0240:42 MYT)
- 1841:52 UTC (0241:52 MYT)
- The incoming downlink message MAS-F (failed) is an automated response. These messages were received at the following times:-
- 1840:04 UTC (0240:04 MYT)
- 1841:14 UTC (0241:14 MYT)
- 1842:22 UTC (0242:22 MYT)
- 1843:31 UTC (0243:31 MYT)
- Each transmission has the same ID 46820392 so each of the MAS-F (failed) messages will relate to the original transmission or one of the re-transmitted messages. However, the message was retransmitted before the first failed response, so the other failed responses are interleaved with retransmissions.
- In summary, the first message was unsuccessful and each of the three attempts to retransmit the message also failed.