ATR42Xwind
Joined: Dec 2006
Posts: 69
Likes: 0
From: Desert
It was case of discussion in our airline. I got an answer from ATR:
[B]Date: Tue, 25 Sep 2007 11:04:05 +0200
From: [email protected]
Subject: Internet website : yaw damper disconnection
To: [email protected]
Dear Sir,
The disconnection of the yaw damper for landing is not requested by any ATR procedure except in case of landing with one propeller feathered as stated in FCOM 2.02.12 p.2 (copy of this page is attached to this email).
Anyway, yaw damper can be disconnected in very short final (around 100 feet above ground) in case of landing with crosswind to ensure a smooth “crab” landing.
I trust this information will prove helpful.
Best regards.
Véronique Elaphos
Flight Operations support
[B]Date: Tue, 25 Sep 2007 11:04:05 +0200
From: [email protected]
Subject: Internet website : yaw damper disconnection
To: [email protected]
Dear Sir,
The disconnection of the yaw damper for landing is not requested by any ATR procedure except in case of landing with one propeller feathered as stated in FCOM 2.02.12 p.2 (copy of this page is attached to this email).
Anyway, yaw damper can be disconnected in very short final (around 100 feet above ground) in case of landing with crosswind to ensure a smooth “crab” landing.
I trust this information will prove helpful.
Best regards.
Véronique Elaphos
Flight Operations support
Joined: May 2005
Posts: 339
Likes: 0
From: varies..a lot
My co. procedure is to land with it on, however, invariably it gets kicked out when starightening the nose just before touchdown and as stated previously it is uncomfortable for the pax....personal prefference is to disconect YD earlier on approach, makes for a smoother last few 100feet.
Joined: May 2005
Posts: 339
Likes: 0
From: varies..a lot
PENKO
It's not that it is uncomfortable to land with YD engaged, it's just that when straightening the nose after a crab approach, it's easy to disengage the YD when using the rudders, the disengagement causes a strong enough lateral movement which is easily corrected by the pilot, however it is sensed in the cabin and more so the further back pax are seated...so a little uncomfortable, whereas if you disengage earlier, whilst crabbing in, a smoother correction of the nose just before touchdown is possible.
It's not that it is uncomfortable to land with YD engaged, it's just that when straightening the nose after a crab approach, it's easy to disengage the YD when using the rudders, the disengagement causes a strong enough lateral movement which is easily corrected by the pilot, however it is sensed in the cabin and more so the further back pax are seated...so a little uncomfortable, whereas if you disengage earlier, whilst crabbing in, a smoother correction of the nose just before touchdown is possible.
