Timeline/Response/MAS/0203:23 MYT

MH370 DECODED
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Event Summary

02:03:23 MYT Saturday, 8 March 2014

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Malaysia Airlines ODC sent an ACARS message to MH370, direct to the cockpit printer. The ACARS message requested the crew to contact the HCM ACC immediately. The incoming downlink message at 1803:24 UTC showed the message failed to reach the aircraft. The message was retransmitted (automatically) at least seven times. On each occasion, an automated downlink message by ACARS showed ‘failed’.


Event Details

  1. Safety Investigation Report MH370/01/2018 1.9.4 Aircraft Communications Addressing and Reporting System

    The first message sent to the aircraft cockpit printer from the MAS ODC was at 1803:23 UTC. The ACARS message requested the crew to contact the HCM ACC immediately. The incoming downlink message at 1803:24 UTC showed the message failed to reach the aircraft. Messages are auto transmitted every 2 minutes and the message was retransmitted until 1843:33 UTC but all messages failed to get a response. Automated downlink message by ACARS showed ‘failed’. Message sent to the aircraft cockpit printer and the Automated Downlink messages are shown in Figures 1.9I and 1.9J (below), respectively.

    Note: Instead of the images in Figures 1.9I and 1.9J the transcript of the ACARS message is shown below.

  2. Safety Investigation Report MH370/01/2018 Appendix 1.9A ACARS Traffic Log


    Time
    18:03:23
    Trans
    46819784
    Direction
    Outgoing Uplink
    AN
    9M-MRO
    FI
    MH0370
    Medium
    Machine
    MHKULKJACM001
    Raw DTG
    071803
    SMI
    AGM
    Application
    RELAY
    Status
    Uplink Sent
    Message Type
    B777 Cockpit Printer Uplink for ODC -- B777 Cockpit Printer Uplink-ODC
    Source/Destination
    QXSXMXS

    QU QXSXMXS
    .DPCCAMH 071803
    AGM
    AN 9M-MRO/FI MH0370/MA 991I
    -
    =======================================
    I   MALAYSIA AIRLINES - ODC             I
    =======================================
    URGET REQUEST

    PLS CONTACT HO CHI MING ATC ASAP

    THEY COMPLAIN CANNOT TRACK YOU ON THEIR RADAR

    I RECEIVED CALL FROM SUBANG CENTRE

    PLS ACK THESE MSG

    REGARDS
    MARVIN



    Time
    18:03:24
    Trans
    46819784
    Direction
    Incoming Downlink
    AN
    9M-MRO
    FI
    MH0370
    Medium
    Machine
    MHKULKJACM001
    Raw DTG
    071803
    SMI
    MAS
    Application
    RELAY
    Status
    Normal
    Message Type
    MAS-L (link ack)
    Source/Destination
    QXSXMXS

    QU DPCCAMH
    .QXSXMXS 071803
    MAS
    AN 9M-MRO/FI MH0370/MA 991L



    Time
    18:06:25
    Trans
    46819784
    Direction
    Incoming Downlink
    AN
    9M-MRO
    FI
    MH0370
    Medium
    Machine
    MHKULKJACM001
    Raw DTG
    071806
    SMI
    MAS
    Application
    RELAY
    Status
    Normal
    Message Type
    MAS-F (failed)
    Source/Destination
        QXSXMXS
    

    QU DPCCAMH
    .QXSXMXS 071806
    MAS
    AN 9M-MRO/FI MH0370/MA 991F
    - UP INTERCEPT AIRCRAFT NOT LOGGED ON 234
    QU QXSXMXS
    .DPCCAMH 071803
    AGM
    AN 9M-MRO/FI MH0370/MA 991I
    -
    =======================================
    I   MALAYSIA AIRLINES - ODC             I
    =======================================
    URGET REQUEST

    PLS CONTACT





Notes

  1. Additional transmissions related to this ACARS message are included in the ACARS Traffic Log for MH370 (9M-MRO) released by the Ministry of Transport (Malaysia) in September 2018.
  2. This message from MAS ODC to MH370 was first sent at 18:03:23 UTC (02:03:23 MYT) and retransmitted at the following times:-
    1. 1808:09 UTC (0208:09 MYT)
    2. 1810:00 UTC (0210:00 MYT)
    3. 1811:50 UTC (0211:50 MYT)
    4. 1813:40 UTC (0213:40 MYT)
    5. 1815:23 UTC (0215:23 MYT)
    6. 1817:11 UTC (0217:11 MYT)
    7. 1818:14 UTC (0218:14 MYT)
  3. An automated response at 1819:34 UTC (0219:34 MYT) has a message Status of Trashed.
  4. The ACARS Traffic Log does not contain any further transmissions related to this message.
  5. The extract (above) stated that 'the message was retransmitted until 1843:33 UTC' but evidence of that is not available.
  6. Malaysia Airlines sent a different message at 1838:51 UTC (0238:51 MYT).