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Here’s what we know about F-35 ejection seat woes so far
Military officials won’t answer whether they’ve found the problem on any planes.
Some F-35s grounded again for new round of inspections
Recent inspections revealed a new problem with F-35s with high flight hours.
By Shawn Snow and Valerie Insinna
Heading into F-35 operational tests, threat of delays loom
The F-35 operational test plan doesn't leave much margin for re-testing or flight cancellations.
By Valerie Insinna
All US F-35s grounded worldwide
All F-35s have been grounded after common fuel tube problems found.
By Tara Copp, AP and Shawn Snow