Why does airbus say retard

Welcome to flightglobal. This site uses cookies. Read our policy. Airbus A operators are being advised to modify the type's warning logic in a bid to provide additional safeguards against accidental failure to retard thrust on landing. The 'enhanced retard' or 'F5' modification is intended to alert pilots if they have not correctly reduced thrust during touchdown.

Investigation of the fatal TAM A overrun at Sao Paulo Congonhas three years ago determined that, for unknown reasons, the crew only retarded one of the two throttle levers on landing. There had been previous instances of similar omissions, notably the overrun of a TransAsia Airways A at Taipei in Standard landing procedure on the A requires pilots to retard both throttle levers during landing.

The aircraft, operated by Belarusian carrier Grodno, had been attempting a night-time ILS approach in poor weather on Russian investigators have disclosed that an Azimuth Sukhoi Superjet captain inadvertently deployed the landing-gear in cruise, prompting a climb response which placed the twinjet in conflict with another aircraft.

In a 9 November bulletin the federal air transport regulator Rosaviatsia has detailed the 21 October incident, involving a flight GE Aviation has completed dust-ingestion testing on its new GE9X engine for the Boeing X, as the propulsion specialist eyes a potential third application for the widebody turbofan.

We provide news, data, analytics and advisory services to connect the aviation community globally and help organisations shape their business strategies, identify new opportunities and make better decisions faster. Site powered by Webvision Cloud. Skip to main content Skip to navigation. In doing so, the PM shall brief the PF on what has been done and what is coming up. Briefings provide a standardized way for the PM to describe the procedures.

As succinctly as possible, the PM tells the PF what to look at and when. In the example of an instrument approach procedure, the PM will review the approach plates with the PF and describe how the aircraft is going to fly the approach.

Callouts serve a similar function in that they keep everyone on the flight deck focused on the essential items during critical phases of flight. On takeoff, the pilot monitoring should be carefully monitoring the airspeed and should call out V1, V2, and rotation speeds.

These speeds are previously calculated and agreed upon before commencing the takeoff roll, but the pilot flying might be distracted and focused on another task, like fighting a crosswind.

Having the PM make these callouts ensures that each pilot on board knows exactly what the plan is at each point. These critical airspeeds benchmark the flight profile, and the plan of action should anything go wrong. By having two pilots on board, they can divide their attention and accomplish more as a whole than either one can do individually.

Automation has taken over some callouts for us. Aural, or sound, alerts are used in some advanced avionics systems to grab the attention of those on the flight deck. Ground proximity warning systems GPWS , for example, use radar altimeter to measure height above ground. Most large aircraft use their radar altimeters to trigger callouts for low altitude.

This is an explanatory description of crew resource management to illustrate the importance of callouts and briefings. Actual CRM skills vary slightly from company to company and is an integral part of pilot training at the airline or air charter operator level. The importance of the RETARD aural alert in Airbus aircraft is an important case study in why knowing the systems of the aircraft is vital knowledge for pilots.

These days, the throttle just tells the engine controller what power setting the pilot would like to have, and the engine controller reduces the fuel flow at a rate that the engine can handle. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group.

Create a free Team What is Teams? Learn more. Why does the A call out to retard at 20 feet above the runway? Ask Question. Asked 3 years, 3 months ago. Active 2 years, 3 months ago. Viewed 24k times.