B787 med ILS problemer - Curt Lewis

Incident: Canada B789 at Hong Kong on Apr 21st 2020, descended below safe altitude on ILS intercept An Air Canada Boeing 787-9, registration C-FNOH performing flight AC-2287 (dep Apr 20th) from Vancouver,BC (Canada) to Hong Kong (China) with 4 crew on board, was cleared to for the ILS approach to runway 25L. When the aircraft overflew waypoint LOTUS, the aircraft was handed to tower. Shortly after approach observed the aircraft overshooting the localizer and descending to 3900 feet, the minimum sector altitude being 4300 feet. Approach issued a terrain warning, the crew corrected their flight path to re-intercept the localizer and continued for a safe landing. On Apr 24th 2020 the Canadian TSB reported the flight crew reported a false capture of the ILS runway 25L. They were visual with the terrain and the airport. The operator is conducting an internal assessment. There had been other similiar occurrences to runway 25R, see Incident: Virgin Atlantic B789 at Hong Kong on Oct 18th 2019, deviated from localizer and descended below minimum safe altitude, Incident: Virgin Atlantic B789 at Hong Kong on Sep 29th 2019, deviated from localizer and descended below minimum safe altitude, Incident: Etihad B789 at Hong Kong on Sep 7th 2019, veered off localizer and descended below safe height on ILS approach and Incident: Ethiopian B788 at Hong Kong on Jul 18th 2019, loss of control on ILS approach.

Operators of 787s warned after latest ILS deviation  incident at Hong Kong Hong Kong authorities have warned Boeing 787 operators  of possible adverse autopilot behaviour during localiser  capture at the city's international airport, after the latest  in a string of incidents involving the type. A newly-issued NOTAM instructs carriers to check a Boeing  flight crew operations bulletin referring to "anomalies" in  localiser capture and possible misbehavior by the autopilot  flight-director system, particularly during ILS approaches to  runways 25R and 25L. It states that the issue can lead to "proximity to high  grounds", adding that - if it doubt - crews should climb back  to minimum sector altitude and conduct a missed approach. The NOTAM follows an incident on 21 April involving an Air  Canada 787-9, arriving from Vancouver, which had been  cleared for an ILS approach to 25L. Transportation Safety Board of Canada says the crew  contacted air traffic control after reaching the waypoint  LOTUS, located about 15nm from the threshold, and  reported being established on the ILS. After controllers advised the crew to switch to the Hong  Kong tower frequency, they observed the aircraft  "overshooting the localiser" of 25L and descending to 3,900ft -  below the minimum sector altitude of 4,300ft. Controllers contacted the crew to warn of terrain and the  pilots corrected the flightpath to re-intercept the ILS. The  crew reported receiving a "false capture" of the ILS, says  the safety board, which adds that the pilots had visual  contact with both the terrain and the airport at the time. The safety board indicates that only four occupants were on  board the 787 (C-FNOH), suggesting it was operating a  special freight supply service. Boeing has been working on a resolution to the issue, which  has affected several 787 flights into Hong Kong including four  between July and October last year involving aircraft  operated by Virgin Atlantic, Ethiopian Airlines, and Etihad  Airways. Boeing crews warned of misleading pitch guidance from glideslope disruption 17 Apr 2020Operators of various Boeing aircraft types including the 787 and 777 are being warned of misleading pitch guidance during glideslope interference on ILS approaches. Hong Kong probing fourth 787 ILSdeviation incident 9 Mar 2020Investigators have revealed a fourth incident involving a Boeing 787 deviation from the localiser path, during an ILS approach to runway 25R at Hong Kong last year. Virgin 787s suffered Hong Kong ILS deviations after Etihad incident 6 Mar 2020Investigators in Hong Kong have revealed two other serious localiser deviation incidents, both involving Virgin Atlantic Boeing 787-9s, which occurred within a few weeks of a similar occurrence to an Etihad Airways 787-9.