ok, since Banshee is secretive about his findings i decided to do a bit of research my self, there was a topic earlier in the year on this forum. Some guy wanted to know how to stop his air infantry transport dancing and noone posted a aoltion so here is the ini i figured out :-

[DSHP]
Name=*whatever
Prerequisite=*whatever
Strength=1000
Primary=Parachute
Category=AirLift
Armor=heavy
Landable=yes
TechLevel=10
Sight=3
PipScale=Passengers
Speed=17
PitchSpeed=.4
FlightLevel=600
RadarInvisible=yes
Owner=GDI
Cost=300
Points=25
ROT=5
Selectable=yes
Passengers=10
Explosion=TWLT070,S_BANG48,S_BRNL58,S_CLSN58,S_TUMU60
VoiceSelect=30-I000,30-I002,30-I004,30-I006
VoiceMove=30-I014,30-I016,30-I018,30-I022
VoiceAttack=30-I022,30-I034,30-I036
IsDropship=yes
MaxDebris=9
Locomotor={4A582746-9839-11d1-B709-00A024DDAFD1}
MovementZone=Fly
ThreatPosed=0 ; This value MUST be 0 for all building addons
Dock=GADROP
SlowdownDistance=2000
DamageParticleSystems=SparkSys,SmallGreySSys
LegalTarget=yes
AuxSound1=DROPUP1 ;Taking off
AuxSound2=DROPDWN1 ;Landing