Communications:9M-MRO Position Report
9M-MRO Position Report
Background
During flight, MH370 should have transmitted position reports via ACARS every 30 minutes. Position information is collected every five minutes and collated into the transmitted Position Report.
The first (which was also the last) position report was transmitted via ACARS at 1707:29 UTC, 07 March 2014 [0107:29 MYT, 08 March 2014]. This was a collation of 6 reports generated at 5-minute intervals by the system at 1641:43 UTC, 1646:43 UTC, 1651:43 UTC, 1656:43 UTC, 1701:43 UTC and 1706:43 UTC, 07 March 2014. Parameters transmitted are as per Table 1.9A (below). The actual traffic log on the position report is reproduced in Figure 1.9H (below). Position reports were programmed to be transmitted every 30 minutes.
Note: Aircraft position information is also included in the EHM take-off and climb reports.
Source: Safety Investigation Report MH370/01/2018 1.9.4 Aircraft Communications Addressing and Reporting System
1. B777 Position Report (ACARS)
| Time 17:07:29 |
Trans 46818992 |
Direction Incoming Downlink |
AN 9M-MRO |
FI MH0370 |
Medium IOR2 |
Machine MHKULKJACM001 |
Raw DTG 071707 |
SMI DFD |
Application RELAY |
| Status Normal |
Message Type DFD B777 Position Report (NEW) |
Source/Destination QXSXMXS |
|||||||
QU DPCCAMH
.QXSXMXS 071707
DFD
FI MH0370/AN 9M-MRO
DT QXT IOR2 071707 D03A
- MAS001A0 B777 POSITION REPORT 565
| ACID | FLT | FM | FLCT | DATE | DPT | DST |
| MRO | S370 | TR | 318 | 07/03/14 | WMKK | ZBAA |
| SWID | SFC |
| 316A-BSM-710-02 | 18661 |
| GMT | ALT | CAS | MACH | TAT | SAT | LAT | LONG |
| 164143 | 103 | 168.4 | .255 | 31.1 | 27.3 | 2.767 | 101.715 |
| 164643 | 10582 | 261.8 | .478 | 23.4 | 10.4 | 3.074 | 101.760 |
| 165143 | 21193 | 301.1 | .669 | 11.6 | -11.8 | 3.553 | 101.988 |
| 165643 | 28938 | 303.1 | .783 | 2.6 | -27.4 | 4.109 | 102.251 |
| 170143 | 34998 | 278.0 | .819 | -13.4 | -43.9 | 4.708 | 102.534 |
| 170643 | 35004 | 278.4 | .821 | -13.1 | -43.8 | 5.299 | 102.813 |
| GWT | TOTFW | WINDIR | WINDSP | THDG |
| 492520 | 49200 | 140.3 | 1.25 | -33.5 |
| 489200 | 47800 | 107.6 | 9.38 | 27.3 |
| 486240 | 46500 | 91.8 | 19.50 | 27.8 |
| 483840 | 45400 | 58.4 | 10.63 | 26.0 |
| 481880 | 44500 | 69.6 | 17.38 | 26.8 |
| 480600 | 43800 | 70.0 | 17.13 | 26.7 |
Source: Safety Investigation Report MH370/01/2018 Appendix 1.9A
Also included in Safety Investigation Report MH370/01/2018 as Figure 1.9H - Position Report
Note: Additional ACARS messages related to this transmission are included in the ACARS Traffic Log for MH370 (9M-MRO).
2. Table 1.9A - ACARS Position Report
In this Table the ACARS message data is formatted with the relevant headings.
| Greenwich Mean Time (GMT) - UTC | 1641:43 | 1646:43 | 1651:43 | 1656:43 | 1701:43 | 1706:43 |
| Altitude (ALT) – Feet | 103 | 10,582 | 21,193 | 28,938 | 34,998 | 35,004 |
| Calibrated Airspeed (CAS) - Knots | 168.4 | 261.8 | 301.1 | 303.1 | 278.0 | 278.4 |
| MACH | 0.255 | 0.478 | 0.669 | 0.783 | 0.819 | 0.821 |
| Total Air Temperature (TAT) - °C | 31.1 | 23.4 | 11.6 | 2.6 | -13.4 | -13.1 |
| Static Air Temperature (SAT) - °C | 27.3 | 10.4 | -11.8 | -27.4 | -43.9 | -43.8 |
| Latitude (LAT) | 2.767 | 3.074 | 3.553 | 4.109 | 4.708 | 5.299 |
| Longitude (LONG) | 101.715 | 101.760 | 101.988 | 102.251 | 102.534 | 102.813 |
| Gross Weight (GWT) – lb | 492,520 | 489,200 | 486,240 | 483,840 | 481,880 | 480,600 |
| Total Remaining Fuel Weight (TOTFW) - kg | 49,200 | 47,800 | 46,500 | 45,400 | 44,500 | 43,800 |
| Wind Direction (WINDIR) | 140.3 | 107.6 | 91.8 | 58.4 | 69.6 | 70.0 |
| Wind Speed (WINDSP) | 1.25 | 9.38 | 19.50 | 10.63 | 17.38 | 17.13 |
| True Heading (THDG) | -33.5 | 27.3 | 27.8 | 26.0 | 26.8 | 26.7 |
| Note: Values in bold have been corrected using data from the original ACARS position report. | ||||||
Table 1.9A - ACARS Position Report
Source:
Safety Investigation Report MH370/01/2018
1.9 Communications