May 20, 2015
A400M black box sent to U.S. to seek crash clues after problems in reading the data
The Airbus Group troop and cargo plane crashed shortly after takeoff outside Seville on May 9.
Voice and data recorders were quickly retrieved and sent to France to be analysed, but compatibility problems hindered the process off downloading data.
At least one of the boxes has been sent to Florida to be analysed using specialist equipment at the manufacturer, L3 Communications.
The Spanish defence ministry, which is leading the investigation, has declined all comment on the probe.
The crash prompted four nations to ground the plane and France to limit its use to essential operations.
Spain also withdrew permission for flight tests, effectively halting deliveries.
Airbus has delivered two A400Ms this year and had planned on building and delivering a further 12.
For now, production at the Seville assembly plant is unaffected by the halt in deliveries, the spokesman said.