New investigation launched on AF Boeing 777 incident.

Nouvelle enquête après un incident à bord d’un Boeing 777 d’Air France

par Arnaud Racapé vendredi 29 mai 2015 16:53

Une nouvelle enquête vise l’équipage d’un Boeing 777 de la compagnie Air France © MAXPPP

Une nouvelle enquête est en cours à Air France, doublée d’une investigation du BEA. Elle concerne un vol Paris-Mexico datant du 22 mai dernier, au cours duquel l’équipage d’un Boeing aurait entré des données erronées dans le système informatique, provoquant des perturbations au décollage et une petite frayeur pour les pilotes. C’est la deuxième enquête visant un avion de la compagnie ce mois-ci.

A new investigation is taking place in Air France, doubled on by the Bureau Enquete Analyse (Bureau of investigation and analysis.)  It concerns a Paris-Mexico flight on 22 May last, where the Boeing flight crew entered incorrect information, they been given, into the computer system. This caused an upset for the take-off and a slight mix-up for the pilots. This is the second investigation on an AF aircraft this month (The first involved an AF aircraft being escorted by two fighter aircraft when going off course).

Air France a lancé une nouvelle enquête en interne concernant un incident survenu le 22 mai, à bord d’un Boeing cargo reliant l’aéroport Paris Charles de Gaulle à Mexico, au Mexique. Un problème de saisie informatique a obligé l’équipage à prendre les commandes de l’avion en pleine phase de décollage. Le BEA s’est également saisi de l’affaire.

Air France launched a new internal investigation on the 22 May incident on board a Boeing cargo aircraft en route from Paris CDG to Mexico city. The computer output caused the crew to take manual control of the aircraft during take-off. The BEA are carrying out their own investigation.

Erreur de saisie informatique. Computer error calculations.

Il y a quelques jours, Air France confirmait l’ouverture d’une enquête en interne concernant le vol d’un de ses Boeing 777, passé tout près d’une collision avec le Mont Cameroun en Afrique en voulant contourner un orage.

A few days ago AF confirmed a previous internal investigation concerning another one of it’s B777, when it narrowly missed colliding with Mount Cameroon in Africa due to avoiding a storm.   

Cette fois, c’est une erreur de saisie informatique qui est à l’origine d’une investigation. Le vendredi 22 mai dernier, l’équipage d’un Boeing cargo 777 reliant Paris à Mexico a entré des données erronées dans le système informatique de l’avion, ce qui aurait provoqué des perturbations au décollage, une phase de vol automatisée. This time the investigation centres around errors in computer calculations.

The CDG – Mexico flight experienced problems on T/O when the engine rating panel settings (normally automatic) were over-ridden by the crew. 

Le poids de l’appareil sous-estimé. T/O weight underestimated.

Ils auraient sous-estimé le poids de l’appareil d’une centaine de tonnes (soit près du quart de son poids maximum au départ), conduisant le système à ordonner une poussée des moteurs moins forte que nécessaire au décollage. Le danger était réel puisque l’avion, dans ce cas, tente de quitter le sol prématurément, le risque étant que la queue de l’appareil touche la piste.

The overall weight of the aircraft was under-estimated by a hundred tonnes (about a quarter of the max T/O weight), leading the system to drive the engine trust less than necessary for take-off. The real danger would lead the aircraft to attempt to leave the ground prematurely, with the attendant risk of the tail striking the ground, (at the very minimum.)

Les pilotes ont donc été contraints de prendre les commandes de l’avion, avant de poursuivre leur route jusqu’au Mexique. Ils ont été suspendus à leur arrivée à destination, en attendant les conclusions de l’enquête. Le Bureau d’enquêtes et d’analyses (BEA) fait savoir par une porte-parole qu’une enquête a été ouverte également par ses services.

The pilots were forced to take control of the engine thrust, before they continued enroute to Mexico. The aircraft was grounded on arrival at it’s destination, waiting for conclusions of the investigation. A BEA spokes person said they were also carrying out an investigation.

About bill

Worked in the technical / engineering area as a Science Laboratory Technician and as an Aeronautics Engineer. The artistic side involves writing under the nom de plume of Billy Olsenn, his recently written play 'A Case of Wine' was staged by the players group Straight Make-Up at the 2012 Birr one act drama festival. It's next staging was in the one act circuit is in Cavan, at Maudebawn on Sat 10 Nov 2012. Then it was performed in the Bray, Co.Wicklow at the very popular one act festival in January 2013. Next play is FEAR. A dark tale about revenge on the cruel death of two pensioners by young thugs. Neighbours hatch a devious and dangerous plan to exact old-style revenge. Bill is a member of the Drama League of Ireland and his plays have been critically vetted and certified as original pieces of work by the DLI. Another literary project is that of commemoration of an aircraft crash on Djouce mountain in Wicklow in 1946. Bill wrote articles for the 50th, 60th and most recently the 70th anniversary, (12 Aug 2016) all were published in the Wicklow Times and ensured the survivors of the crash, all French Girl Guides, were not forgotten. Articles reproduced on this website. But mostly this site gives a more general European and specific French slant on popular and not so popular articles of French news, translated to English by the author. Each article is translated on a paragraph by paragraph basis so easy to read in either language and even possible to improve either language by comparison of the short English and French paragraphs. Amusez vous bien. The author is currently writing an easy to read technical aviation book centered around the Fokker 50. Another interest is that dealt with in another of Bill's websites www.realnamara.net, a Statue of the mother of God, Mary. It was erected in 1972 in Dublin, at the end of the Bull Wall near Clontarf, and my grandfather William Nelson, was the main instigator of that project. I give talks on the history of the statue and my grandfather's adventurous and dangerous life at sea. Technical assistance with each website is by J O'N.
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