The next routine forecast will be issued at 4:30 pm EDT Thursday. 3.3.6 Where ATC units provide both FIS and ATC service, the provision of ATC service will take precedence over the provision of FIS whenever the provision of ATC service so requires. MATS version23 was current at the time of occurrence involving VH-YIR and VH-VYK. Aviation Verification System (AVS) 2 (due to be completed in 2017). Research has shown that appropriate flight crew situation awareness relies on crew being alert to developing situations and aware of the implications of these situations (Orasanu, 1993). 256 km Mildura Radar Loop Provides access to meteorological images of the Australian weather watch radar of rainfall and wind. Alternate fuel is calculated as sufficient fuel to approach the destination, conduct a missed approach and proceed to the nominated alternate airport for landing. Transport Canada, in their document Aeronautical Information Manual RAC Rules of the Air and Air Traffic Services section 1.1.1 ATC and Information Services stated that: Flight information service is provided by ATC units to assist pilots by supplying information concerning known hazardous flight conditions. Alerting function of special weather reports (SPECI) is not met by the automatic broadcast services, Limited provision of flight information service for some non major airports, Information Publication Scheme - Agency Publication Plan, Human Factors for Transport Safety Investigators course, Transport Safety Investigation Regulations, Information for police and coronial officers, Railway accident guidelines for operators, Mandatory - Aviation accident or incident notification, Voluntary - REPCON Aviation Confidential Reporting Scheme, Mandatory - Marine accident or incident notification, Voluntary - REPCON Marine Confidential Reporting Scheme, Mandatory - Rail accident or incident notification, Voluntary - REPCON Rail Confidential Reporting Scheme. The meteorologist on duty had over 35 years of experience, including 30 years as a forecaster with the Bureau of Meteorology (BoM). Moron Australis here we come! Why is there so much secrecy regarding their testing equipment? This showed that Qantas 735 could hold until about 1020, 10minutes short of the requirement. Quality checks on data are not normally performed. The review determined that, because the TAF had only a 30 per cent chance of fog and the TTF issued at the same time forecast no deterioration, the amended TAF would not be passed to the flight crew. This includes weather and operational information for the destination, which should be considered prior to a decision point or point of no return. Ltd. (Virgin) advised of the following safety action in response to this occurrence: On 18 June 2013, two Boeing 737-800 aircraft, VH-YIR operated by Virgin Australia Airlines Pty. Based on this revised information, the crew of Qantas 735 decided to divert to Mildura Airport, rather than holding or conducting an autoland at Adelaide. The estimated time of arrival at Adelaide was 0920. They reported to Airservices that this was due to high workload at the time, and a consideration that the information in the pilots report did not differ significantly to the forecast TEMPO conditions. At the time of this occurrence, runway 16 at Melbourne Airport, Victoria was the only location in Australia with: At the time of the occurrence, Adelaide Airport was certified for CAT I ILS with autoland. Observations were drawn from Mildura Airport {station 076031}. Mildura Weather Forecast, VIC 3500 - WillyWeather. This recommended that Airservices, as the issue owner, work in collaboration with the Bureau of Meteorology to instigate a system change to reinstate the alerting function of SPECI reports currently not available through an Automatic Broadcast Service. The ATSB also found that the forecasting process at Mildura Airport appeared to be conservative, with a high false alarm rate. This information will include data concerning unfavourable flight conditions and other known hazards; which may not have been available to the pilot prior to takeoff or which may have developed along the route of flight. At 0939 the crew of a Qantaslink Bombardier DHC-8 aircraft (Dash-8) broadcast to traffic at Mildura that they were conducting a goaround. This claim, however, cannot be verified because the BoM uses a non-standard method for recording temperatures at Mildura, and furthermore the parallel data provided to me in December 2017 as proof of equivalence is flawed and deficient. This included clarification of the minimum requirements of the service provided (i.e. At 0918, a special weather report (SPECI) observation was issued for Mildura, listing the cloud as broken at 200 ft, and visibility in excess of 10 km. Light winds becoming west to southwesterly 15 to 20 km/h during the day. In respect of the provision of SPECI information to pilots, MATS was amended to include the requirement that: Do not alert pilots to the availability of a SPECI that can be obtained from an Automatic Broadcast Service. In this instance, that would have increased the risk of the starvation of fuel to the No.2 engine late in the approach or on landing due to the low fuel level in the No.2 main wing tank at that time. Council continues to monitor flooding throughout the rivers that pass through the municipality.For the latest information, including flood warnings, road closures and support available, or to access our Community Relief and Support Service please click on the link below. As the wind was forecast to tend southerly, and fog and low cloud were rare in a southerly flow at Mildura, the decision was made to continue with the current TEMPO. The automatic broadcast services did not have the capacity to recognise and actively disseminate special weather reports (SPECI) to pilots, thus not meeting the intent of the SPECI alerting function provided by controller-initiated flight information service. examine the accuracy of aviation meteorological products in Australia, examine the procedures used to provide information to flight crews from air traffic services and management of changes to those procedures, examine the provision by the operators of information to the respective flight crews. Of the 160 occurrences, 36 resulted in the declaration of a PAN or other emergency by the crew to facilitate either a diversion (particularly to a military airport) or priority landing. This included broken cloud at 600ft above ground level (AGL), which was below the alternate minima for Mildura. The FOs relevant aeronautical experience is outlined in Table 2. Additionally, the AWB for Adelaide included the potential for fog by way of a code grey, but the TAF issued at 1800 did not forecast fog. Mildura, Victoria November 2022 Daily Weather Observations IDCJDW3051.202211 Prepared at 13:01 UTC on Friday 2 December 2022 Source of data Observations were drawn from Mildura Airport {station 076031}. Readers are cautioned that new evidence will become available as the investigation progresses that will enhance the ATSB's understanding of the accident as outlined in this web update. - Displayed until any imbalance is reduced to 91 kg (200 lbs). a PNR [Point of No Return]), if necessary. The Manual of Air Traffic Services (MATS) is a joint document of Airservices and the Department of Defence. Evidence from the relevant ATC enroute sector recorded radio communication showed that controllers were providing inbound aircraft within 60minutes of Adelaide Airport with advice of an amended TAF and of ongoing SPECIs. This analysis will examine the factors that contributed to these outcomes, including reviewing the risk controls that support inflight decision making. However, given the observations of significantly better weather at Mildura, they also concluded a diversion was a better option at that time. Typically, this means flying in cloud or limited visibility. As they taxied in, the captain told the cabin crew to stand down and normal arrival procedures resumed. This magazine was produced by the Civil Aviation Safety Authority and distributed to pilots and other aviation personnel. The flight crews of Velocity 1384 and Qantas 735 had insufficient fuel to divert to another airport once they arrived at Mildura. The next warning will be issued by 03:00 pm EDT on Thursday 19 January 2023. The last 14 months of Daily Weather Observations for Mildura, Victoria are also here on this web site: Jan23Dec22Nov22Oct22Sep22Aug22Jul22Jun22May22Apr22Mar22Feb22Jan22Dec21. Table 3: Captains aeronautical experience. At 0700, an amended TAF for Adelaide was issued effective from that time. a 'live' flight plan), the TTF shall be used in the first instance, providing the flight's scheduled ETA [estimated time of arrival] is within the validity time of the TTF. The section went on to state the prevention of collisions and expediting of traffic will take precedence over this service. However, on the day of the occurrence, a NOTAM was in place advising that the broadcast function of the Mildura AWIS was unserviceable. The MATS section on hazard alerting required ATC to prefix an FIS call with Hazard Alert in the case of a change to a component of FIS not described in a current meteorological product or NOTAM. In this case, controllers in adjacent sectors informed flight crew of the amended TAF and SPECIs for Adelaide from the time that the fog was included on the TTF at 0800. For those interested in checking out popular landmarks while visiting Mildura, Kar-Rama Motor Inn is . The AIP stated that ATC-initiated FIS provided pertinent operational information including meteorological conditions and the existence of non-routine meteorological products. Cloud cover is normally reported using expressions that denote the extent of the cover. At 0922, Qantas 735 transferred to the same frequency and was also advised of the arriving traffic. please check the disclaimer before using these data. In this occurrence, the forecast extension of the fog at Adelaide occurred after DPA, which limited the available options. At 0950, Velocity 1384 sought an update on the weather from Qantas 735, who stated that the fog had appeared to be getting thicker but was now clearing, although the cloud was still below minima. A review of the international aviation system identified that Australia is comparable to the international industry, particularly with regard to the provision of flight information services (FIS). This service responds to in-flight requests for operational information from pilots operating in all classes of airspace on air traffic control VHF frequencies or high frequencies (HF). At 0800, the TTF for Adelaide showed visibility had reduced to 1 km to the north-west and that patches of fog and shallow fog were present. In addition, dissemination of the AIREP to both Velocity 1384 and Qantas 735 when they came on frequency would have ensured they were aware of the deterioration at Mildura prior to arriving overhead the airport. On 6 April 2004 an Airbus A330 aircraft landed on runway 34L at Sydney Airport in weather conditions that were below the applicable landing minima. Additionally, a review of forecast retrievals for the period up to 2 hours prior to arrival found that 0.09 per cent of the time weather predicted above the alternate minima actually deteriorated below the landing minima. A safety issue is an event or condition that increases safety risk and (a) can reasonably be regarded as having the potential to adversely affect the safety of future operations, and (b) is a characteristic of an organisation or a system, rather than a characteristic of a specific individual, or characteristic of an operating environment at a specific point in time. Centre of Australian Weather and Climate Research. Cleanliness. As the Mildura AWIS was not broadcasting, application of the lower minima could only be applied if the actual QNH was obtained from ATC. The forecasters then decided to amend the Adelaide TAF at 0700 to include a 30 per cent probability of fog. At the time the amended TAF was issued at 0700, Velocity 1384 was at FL 400 in the cruise, about 150 NM (278 km) from Brisbane. The crew of Qantas 735 heard Velocity 1384 broadcast their decision to divert to Mildura. It indicated that, if they became aware of information that was outside their area of responsibility, they may have to address the information to a pilot of an aircraft though another ATC unit. With 1,500 kg of fuel remaining, the aircraft landed without incident in the fog with 250350 m visibility. This forecast predicted: Given their available fuel, the crew of Velocity 1384 determined that they needed to commence an approach just after 1000 to allow for a second approach if needed. For the 3 days preceding the occurrence, they advised going to bed by 2000. At certain airports, an Aerodrome Weather Information Service (AWIS) provides actual weather conditions via telephone or broadcast on VHF radio. LOW VIS PROCSWND 360/5, MAX DW 5 KTS.VIS 500M IN FOGCLD FEW015TMP 6.QNH 1020, SPECI YPAD 172300Z 04006KT 0150 FG BKN000 06/06 Q1021RMK RF00.0/000.0TTF: FM2330 05005KT 9999 FEW025, METAR YMIA 172300Z 23004KT 9999 BKN039 07/06 Q1019RMK RF00.0/000.2, TAF YPAD 172302Z 1800/1906VRB05KT 9999 FEW030 SCT045FM181000 VRB05KT CAVOKFM190000 04008KT CAVOKRMKT 11 14 15 11 Q 1020 1020 1020 1021, TAF YMIA 172302Z 1800/181220008KT 9999 SCT030 SCT050RMKT 08 12 13 10 Q 1020 1019 1019 1020, ATIS YPAD Y 172311APCH: EXP INST APCHRWY: 23OPR INFO: HIAL ON. Common Traffic Advisory Frequency is the frequency on which pilots operating at a non-towered aerodrome should make positional radio broadcasts. The first SPECI indicating the presence of fog was issued at 0948, showing visibility as 900 m in fog and cloud overcast at 100 ft. It operates from specific very high frequency (VHF) transmitters and the contents of the broadcast from each transmitter cater for the needs of aircraft operating in control areas within the broadcast range of each transmitter. The ABS and the on-request service remained as described in the previous version of the AIP. The aircraft tracked to the north-east of the aerodrome and the crew informed ATC that they would conduct an instrument landing system (ILS) approach to runway 23 and then land using the aircraft's autoland system. Web. Weather Wind Rainfall Sun Moon UV Tides Swell. As such, it could not be used for arrivals at Mildura prior to 1000. In support of this occurrence investigation, the ATSB initiated a research investigation into the reliability of aviation weather forecasts at Adelaide and Mildura Airports between 2009 and 2013(AR-2013-200 that will, on completion, be available at www.atsb.gov.au). 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