Safety Investigation Report 2018:2 Analysis/2.2 Air Traffic Services Operations/2.2.8
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SAFETY INVESTIGATION REPORT
Safety Investigation Report MH370/01/2018
This page contains an extract from the Safety Investigation Report MH370/01/2018 and Appendices released by The Malaysian ICAO Annex 13 Safety Investigation Team for MH370, and dated 2 July 2018.
SAFETY INVESTIGATION REPORT
MH370 (9M-MRO)
r) Distress Message
- i) The distress message (DETRESFA) is intended to convey pertinent information to the recipients that there is a situation wherein there is a reasonable certainty that an aircraft and its occupants are threatened by grave and imminent danger and require immediate assistance.
- ii) The DETRESFA message with a date-time-group (DTG) 072232 UTC was transmitted at 2232 UTC [0632 MYT].
- iii)The contents of the DETRESFA message, as shown in Figure 2.2P below was not composed in accordance with the standard specified in ICAO DOC 4444, Air Traffic Management (PANS-ATM) Chapter 11, Air Traffic Services Messages, Appendix 3 (Figure 2.2Q below). The errors are, as below:
- (1) Appendix 3, page A3-9 (Figure 2.2P below) Field type 7 - Aircraft identification and SSR mode and code FPL–MAS370–IS should be “MAS370/A2157”
- (2) Appendix 3, page A3-14 (Figure 2.2P below) Field type 13 - Departure aerodrome and time WMKK1635 should be “WMKK1642”
- (3) Appendix 3, page A3-29 & A3-30 (Figure 2.2P below) Omission of Field Type 20 - Alerting search and rescue information. This field consists of the following sequence of elements separated by spaces. Any information not available should be shown as “NIL” or “NOT KNOWN” and not simply omitted.
- (4) Spelling of DETRESFA should read DETRESFA (Figure 2.2P below)
Figure 2.2P - DETRESFA Message sent over AFTN
Source: DCA Malaysia