B777 Exit Hold function FMS
Thread Starter
Joined: Apr 2008
Posts: 247
Likes: 0
From: Test
B777 Exit Hold function FMS
Hi there,
According to FMS guide,
"The pattern is shortened if EXIT is ARMED while flying turn number 1, or the first turn after crossing the holding fix"
The 2 bold sentences seem to mean the same thing. I just want to confirm, as long as we exit hold when entering the hold in the first turn, the pattern will be shortened to an orbit, confirm?
What will happen if I execute exit hold the moment the aircraft fly straight and level from the 1st turn? It will fly 1 hold and exit when passing the holding fix?
Thanks
According to FMS guide,
"The pattern is shortened if EXIT is ARMED while flying turn number 1, or the first turn after crossing the holding fix"
The 2 bold sentences seem to mean the same thing. I just want to confirm, as long as we exit hold when entering the hold in the first turn, the pattern will be shortened to an orbit, confirm?
What will happen if I execute exit hold the moment the aircraft fly straight and level from the 1st turn? It will fly 1 hold and exit when passing the holding fix?
Thanks
Joined: Aug 2009
Aviation Qualifications: ATPL
Posts: 616
Likes: 57
From: GPS L INVALID
Yes, it should... However, as you may find with the 777 - it will do exactly the opposite of what you expect, or crash the FMS and forget the route as well 
Jokes aside, i recommend leaving a holding by either reselecting the holding fix/station and flying a direct-to, or with heading select - at least then its clear what should happen.
Jokes aside, i recommend leaving a holding by either reselecting the holding fix/station and flying a direct-to, or with heading select - at least then its clear what should happen.
Joined: Jul 2014
Posts: 42
Likes: 0
From: here
Following execution of the exit hold, only the remaining portion of the holding pattern back to the holding fix displays. Exit from the holding pattern may occur prior to crossing the holding fix (“fly-by”) if the course to the next waypoint is not closely aligned with the holding inbound course.
Joined: Jul 2014
Posts: 42
Likes: 0
From: here
Even the 787 Bp 3.0 has issues witn Exit Hold
Operating Instructions
While in a holding pattern, do not select and execute EXIT HOLD then select
Direct-To the hold fix then sequence the hold fix with the route in the modified
state (MOD showing).
If this anomaly occurs, the flight crew should be aware that certain further
modifications to the flight plan can cause another reset. Selecting an instrument
approach can cause another FMC reset. If the FMC resets a second time, the
route and performance data must be entered again.
While in a holding pattern, do not select and execute EXIT HOLD then select
Direct-To the hold fix then sequence the hold fix with the route in the modified
state (MOD showing).
If this anomaly occurs, the flight crew should be aware that certain further
modifications to the flight plan can cause another reset. Selecting an instrument
approach can cause another FMC reset. If the FMC resets a second time, the
route and performance data must be entered again.
Last edited by victorpapa; 19th November 2018 at 19:29.
Joined: Sep 2003
Aviation Qualifications: ATPL
Posts: 956
Likes: 68
From: away from home
Joined: Jul 2007
Posts: 202
Likes: 0
From: I go, therefore I am there!
I've never had a problem with the EXIT HOLD function on the 777. What I do see is after someone has selected EXIT HOLD, the system will not immediately display what they are hoping for, so a lack of confidence in the system leads them to "clean" the FMC up. With appropriate patience and monitoring, the system will EXIT the hold as it is designed to do.
