Here's
some shots of the Red Ranger doing a simulated flying test of the Red
Mobile Armor Vehicle

Here's a shot of the RMAV being in the Aquabase 
Here are some more shots of the RMAV

The shot of the RMAV being in the same shot as the Train Bay is
actually a case of them editing the RMAV into the Train Bay Sentai
stock shot.
Once the alarm sounds to a monster attack in the city, it cuts from the
Aquabase to the city. Once you see it cut to the city, that's the start
of new footage.
Here's new footage of Olympius and Mantevil 
Here's new footage of the Blue Ranger with his Battle Booster 
Here's a new shot of Mantevil 
Here's new footage of Olympius watching the Rangers (excluding Red) and
Mantevil fight as the Rescuebird arrives 
Here's new footage of Olympius with the Rescuebird 
Here's another new shot of Olympius and Mantevil 
Here's snother new shot of Mantis 
Here's a shot of the Rangers and the RMAV 
Once you see a shot of a Demon Card heading into the Hell Mouth in the
Skull Cavern, that's when it's the start of Sentai footage.
Obviously the shots of the Rangers reacting to the Giant Mantevil is
new footage along with the shot of the Red Ranger calling for the
Omegazords.
This shot of Bansheera and Olympius in the Cavern
appears to be new
footage.
This shot of Bansheera
also appears to be
new footage.
Sentai info comes from GoGoV
Episode 38