Un "cover" plate qui se fend où se "désagrège" qq part, sur le réducteur du TP 400 M !
Un carter supérieur ou le "couvercle" qq part ... certainement assez facile à corriger ...juste qq kg de plus !
Bon, si ça fatigue, c'est que c'est une part de la rigidité du boitier de réducteur qui est supportée par ce carter!
Hum, je crois que ça s'est déjà fissuré il y a qq années ! Des corrections insuffisantes! !
Peut être pas le même endroit !
Faudrait en parler à Airbus, côté alliages, ils connaissent bien maintenant ! !
Une impression de déjà vu !
Les essais reprennent bientôt, ce n'est pas si grave !
Bien une paire de mois de perdus, et une correction urgente à apporter par AVIO sauf erreur ?? !
-------------- Une com de Defpro, qui reproduit une com de Airbus, le lien et un large extrait -------------
http://www.defpro.com/news/details/38809/?SID=184fa78497814f740ec43397499ffbad
As communicated, we recently had an engine issue on MSN6, the first
production representative development aircraft. After receiving the
Restricted Type Certificate (RTC) from the European Aviation Safety
Agency (EASA) last April, representing a big milestone and achievement
in the programme, MSN6 started performing the 300 hour Function and
Reliability (F&R) testing required for the award of the full Type
Certificate (TC). Tests had to be suspended after 160 hours of F&R
flying because of the repeated detection of metallic chips in the oil
system of one of the engines.
Airbus Military has supported the engine manufacturer Europrop
International (EPI) in its investigations of the root cause and fixes.
EPI’s investigations have demonstrated that the failure does not impact
the engines’ full capabilities and that the chip detection was provoked
by a crack of a cover plate, a mechanical piece isolating elements
within the Propeller Gear Box (PGB). As a responsibility of EPI, they
have already made a new design available, which is currently in the
validation process.
Consequently, the MSN6 engines as well as all series production engines
have been sent back to EPI for replacement of this cover plate.
We are working with EPI on a plan to minimize the lead-time of the cover
plate replacement in order to resume the F&R flying as soon as
possible. F&R activity will be able to restart when MSN6 is fitted
with the modified engines and upon agreement with EASA of a new F&R
plan.
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JPRS