777/200LR PFD CAS jump

[bauduin_alex]

Hello,

Synopsys:
PFD CAS jump when Capt ALTN DSPL CTRL sw is pushed on -200LR

Please try this in the real thing, not in the box since I know already the outcome.

Procedure:

Ensure all ALTN DSPL sws are in normal mode (Captain, F/O and EICAS).
Ensure Engine Secondary page is displayed on the Lower center display.
Ensure aircraft is flying
Press the Captain ALTN DSPL CTRL switch and check that the Captain PFD speed tape jumps 10 kts and filter down to the proper airspeed in about 8 sec


Background: There is a discrepency in the indication for the relight enveloppe and I suspect an AIMS bug.
Thanks.

[bauduin_alex]

Fellow pilots,

We ve isolated the problem and Boeing issued a Service Bulletin in December. The SB talks about side effects of this problem, engine relight.
The bottom line is that the Xbleed indication does not appear when she's supposed to. Problem occurs between 263 and 270 kts.

Happy landings.