The AIP outlines the elements of ATC-initiated FIS. At 0952, Velocity 1384 updated ATC that they were still holding due to the low cloud at Mildura. The MATS, current as at 15 March 2007, indicated that FIS was to be provided to all aircraft that were being provided with an ATC service, or were otherwise known to the relevant ATC unit. Mildura Forecast View the current warnings for Victoria Forecast issued at 4:30 pm EDT on Saturday 14 January 2023. The broadcast is usually continuous with updates available on a minute by minute basis. With 1,500 kg of fuel remaining, the aircraft landed without incident in the fog with 250350 m visibility. This was the forecast that was available to the crews of Velocity 1384 and Qantas 735 at their times of departure and used for flight planning. In this instance, the controller did not pass the AIREP to incoming aircraft nor to their supervisor, who could have informed BoM of the deterioration. This included broken cloud at 600ft above ground level (AGL), which was below the alternate minima for Mildura. However, appropriate meteorological data was not available at the time to support such an examination and potential safety recommendation for the widespread installation of equipment of this magnitude and complexity. This workload was related to the five inbound aircraft, all of which required traffic information on each other, and other aircraft within the Mallee sector. The third method was an article in the Flight Safety Australia magazine, March-April 2009 edition. This arrangement is consistent with the service provided by Airservices. These included a RNAV GNSS approach to runway 27 with a minima of 660 ft and a Distance Measuring Equipment (DME)[16] or GNSS arrival, to be used with the Mildura non-directional beacon (NDB)[17] or VHF omnidirectional radio range (VOR)[18] ground-based navigation aids. Why would any bureau not use worlds best practice to measure temperatures? imagine a nearby lightning strike producing a believable pulse. The captain had also held Training Captain/Approved Testing Officer approvals since April 2003. The investigation is continuing and will involve: The Australian Transport Safety Bureau acknowledges the traditional owners of country throughout Australia, and their continuing connection to land, sea and community. This resulted in enhancements to Virgins flight planning and flight following policies, re-organisation of the flight following section and expansion of communication infrastructure across the Virgin fleet. Given the speed at which it developed, the fog was forecast to lift in about 12 hours. The aircraft was refuelled and the flight returned to Darlot once conditions improved. While this is theoretically possible, to know if it is being achieved in practice it is necessary to analyse parallel measurements i.e. On nearing Adelaide, the forecast improvement in weather conditions had not occurred and as a result, both aircraft commenced a diversion to Mildura, Victoria. The ATSB found that the weather deterioration at Adelaide did not appear on the forecast when both aircraft departed their respective ports and furthermore the forecast duration of the fog in the later, amended forecast showed a clearance time earlier than actually occurred. The team leader on the day was a qualified dispatcher with over 20 years of experience. In my neck of the woods the BoM seem to be in the throes of replacing a long term, human attended, mercury thermometer and weather station with an AWS. On 31 March 2014, the ATSB hosted a safety forum in Canberra, with representatives from Airservices, the Australian Federation of Air Pilots, the Australian and International Pilots Association, the BoM, CASA, CivilAir (Australias ATC union), Qantas, Virgin and the Virgin Pilots Association. Naturalistic Decision Making, Lawrence Erlbaum Associates, pp. In short, it appears that on the hottest days in Mildura during the period that manual readings were being taken after installation of the most recent probe no one was turning-up to take the manual reading from the mercury thermometer. I wonder if this isnt a psychological ploy to train people to over estimate temperature 30C is going to feel like 33C all the time, phew its hot ! By this time, the flight crew had gathered the latest information about the conditions at Adelaide from multiple sources, which continued to state a forecast improvement from 0900. This airport was also affected by unforecast poor weather at the time of their arrival. Although the captain of Velocity1384indicated that there was sufficient time to assess the option of returning to Adelaide, there was only a matter of several minutes available to make that decision and track towards Adelaide. 76 Deakin Avenue, Mildura VIC Australia Dr. Marohasy, The crew of Velocity 1384 had commenced their descent to Adelaide and gathered further information about the conditions from the Adelaide tower controller. At the time that Velocity 1384 and Qantas 735 switched to the Tailem Bend frequency, the last enroute frequency before Adelaide Approach, the controller queried both crews awareness of the fog at Adelaide Airport. 159166. 128 km Mildura 5 min Rainfalls. The size of the change was assessed as small and the magnitude of the change as reasonable. In September 2007, the MATS was entirely reformatted and the reference to amendments changed to versions, with version1 being effective on 7 September 2007. These were triggered by a change in one of the recorded parameters meeting the requirements for a SPECI (see the section titled Automatic weather station). There is the potential that due to workload considerations, pilot requests may be redirected to another VHF frequency or Flightwatch HF. They cover how the data are obtained, how they are processed, and what each column means. If not, what did they record it for? The river height will reach 38.3 metres at the Mildura Weir 113 millimetres higher than the . There are many more maximum temperatures measurements available for the electronic probe (n=948) than for the mercury thermometer (n=115), and the distribution is quite different, with a somewhat more normal distribution for the probe data, as shown in Figure 2. Additionally, aspects such as aircraft holding time and the number of traffic movements also need to be taken into account to determine the operational effect and risk of any inaccuracy. Under the provision of FIS, for major airports and airports without a broadcasting AWIS, pilots will be alerted if they are within 60minutes of the affected destination or the relevant condition. The day previously (17 June 2013), the FO was on stand-by without being called out. (iii) relay of communications with ATC: IFR clearance and SVFR [special VFR] authorization. While the increase in data was a benefit to BoM, an unexpected outcome was the production of numerous AUTO SPECI reports. The B737 is equipped to conduct area navigation Global Navigation Satellite System (RNAV GNSS) approaches, which are classified as non-precision approaches. This typically involves the pilot monitoring (PM) locating the correct checklist in the QRH and reading the title and condition to the pilot flying (PF) to confirm selection of the correct checklist. As the conditions had deteriorated below this minima, the RNAV GNSS approach could not be conducted in normal operations. It stated that FIS was to include operational information about meteorological conditions and hazard alerts. The implementation of the next generations of TAF verification, AVS2, aims to: Climatology Interface Development Project. The crew of Qantas 735 had been monitoring the Mildura weather through ACARS and heard the transmission by ATC of the METAR information to Velocity 1384. Fuel required to enable the aircraft to fly from that point to 1500 ft above an adequate aerodrome, make an approach and land; and, Variable Reserve based on the point above but not more than the Maximum Variable Reserve; and, Fuel to provide for WX [weather] holding, if the weather at the selected adequate aerodrome is forecast to be below the applicable alternate minima or a probability of thunderstorms is forecast; and, Fuel to provide for any required TFC [traffic] holding at the selected adequate aerodrome; and. Ltd. and Qantas Airways Ltd. They are very very accurate but taking a different time and or time curve shape to warm up and cool down means that for a rapid change in temperature they will accurately record a different value. The BoM reported advising Airservices that the deterioration was unlikely to improve in the next 15 minutes. This aircraft, registered VH-VYK and operated by Qantas, was en route from Sydney, New South Wales to Adelaide before also diverting to Mildura. 2 tank supplying the majority of the fuel to both engines and therefore being used at a higher rate. In addition, once the controllers workload decreased, they commenced passing the latest SPECI and amended TAF information to aircraft at Mildura. While the crew of Qantas 735 reported considering the implications of the TEMPO on the 0158Mildura TAF, and calculated that they had sufficient fuel to meet this requirement, the crew of Velocity1384 did not complete that consideration. As the Mildura AWIS was not broadcasting, application of the lower minima could only be applied if the actual QNH was obtained from ATC. When the aircraft was at the decision altitude, the crew initiated a missed approach procedure as they had not obtained visual reference with the runway. The DME or GNSS arrival had a circling minima of 980 ft for large jet aircraft. At the same time, Airservices were also conducting a review of the provision of hazard alerting services to aircraft. In the case of the occurrence flights, as the TAF for Adelaide that was used for flight planning did not require an alternate, each aircraft departed with sufficient fuel to reach Adelaide and land with the stipulated fuel reserves intact. The section relating to the provision of FIS was substantially the same as version 7 of the MATS. Flight planning was required to take into account the requirements for holding fuel in lieu of the requirement to nominate an alternate. The content of MATS is intended to be consistent with the content of the AIP so that procedures and practices used by pilots and air traffic controllers are standardised. Mostly sunny. As a result, the crew elected to conduct a missed approach. Mildura was equipped with an Aerodrome Weather Information Service (AWIS) from which pilots could normally access current weather reports. This service was structured to support the responsibility of pilots to obtain information inflight on which to base operational decisions relating to the continuation or diversion of a flight.. In relation to the provision of ATC-initiated FIS at Mildura, the controller responsible for the Mallee en route sector reported that workload initially precluded them from passing information on the weather deterioration at Mildura Airport. Qantas 735 had not departed Sydney when the amended TAF for Adelaide was issued at 0700; however, they had entered the sterile cockpit[20] phase of flight. This display, together with an explanation of the LOW FUEL, FUEL CONFIGURATION and FUEL IMBALANCE indications, is expanded at Figure 5. 2. Given the time of day and expected temperature increase, this was a reasonable assessment. In this instance, if the aircraft could carry sufficient fuel to hold until 30 minutes beyond any specified time of improvement in the weather conditions at the destination, an alternate was not required. The 0358 amended TAF for Mildura that morning forecast light winds and scattered cloud at 3,000ft and broken cloud at 6,000 ft. The fog at Adelaide was not forecast when the aircraft left Brisbane. The manual contains the rules that relate to the provision of air traffic services. 0. For example, a report showing an improvement in the weather may be useful to an aircraft in the holding pattern directly overhead the aerodrome, to decide on whether or not to fly the approach or not. In relation to a change in weather conditions after DPA, the manual contained the following note: It is recognised that there are occasions when a flight may pass DPA with the required fuel on board and a subsequent deterioration in forecast weather may then result in the minimum mandatory requirements above not being met. As such, no analysis or findings are included in this report. The aisle supervisors were appropriately endorsed and current for their role, which included oversight of the en route sector controllers. 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. The last 14 months of Daily Weather Observations for Mildura, Victoria are also here on this web site: Jan23Dec22Nov22Oct22Sep22Aug22Jul22Jun22May22Apr22Mar22Feb22Jan22Dec21. The investigation is continuing and will: The information contained in this Interim report is released in accordance with section 25 of the Transport Safety Investigation Act 2003 and is derived from the ongoing investigation of the occurrence. Highreliability industries are characterised by highconsequence but very low likelihood of an adverse outcome. Both allowed aircraft to be dispatched without carrying alternate fuel if the weather forecast for the destination did not require an alternate. Due to poor weather in Adelaide, both aircraft were forced to divert to an alternate airport (Mildura, Victoria). The time period for the provision of SIGMETs (messages about en route weather phenomena that are potentially hazardous to aircraft) was increased to 2 hours in MATS version 6 effective on 19 November 2008. In addition, it was noted that: Flight information will be made available, whenever practicable, to any aircraft in communication with an ATC unit, prior to takeoff or when in flight, except where such service is provided by the aircraft operator. An AERIS is a continuous broadcast of routine aerodrome weather reports (METAR[24]) from selected airports around Australia. In addition, the ATSB noted that the industry expectation for the provision of flight information services was not aligned with that provided by Airservices Australia (Airservices). An autoland is a precise, repeatable landing that can be conducted in poor weather conditions where insufficient visual cues are available to the pilots. Please contact theSESfor further support and information about how to best prepare. Light winds. For the 201516 financial year [FY] the BoM will install weather cameras at 1520 locations at major capital city aerodromes, including Adelaide airport, and key regional aerodromes. 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