diff --git a/ionic/animations/animation.ts b/ionic/animations/animation.ts
index 2d0bd93e58..4d221f8170 100644
--- a/ionic/animations/animation.ts
+++ b/ionic/animations/animation.ts
@@ -23,13 +23,14 @@ export class Animation {
   private _fFns: Function[];
   private _fOnceFns: Function[];
   private _wChg: boolean = false;
-  private _rv: boolean;
+  private _rv: boolean = false;
   private _unregTrans: Function;
   private _tmr: number;
   private _lastUpd: number = 0;
 
-  public isPlaying: boolean;
-  public hasTween: boolean;
+  public isPlaying: boolean = false;
+  public hasTween: boolean = false;
+  public hasCompleted: boolean = false;
 
   constructor(ele?: any, opts: AnimationOptions = {}) {
     this._reset();
@@ -57,9 +58,6 @@ export class Animation {
     this._fOnceFns = [];
 
     this._clearAsync();
-
-    this.isPlaying = this.hasTween = this._rv = false;
-    this._easing = this._dur = null;
   }
 
   element(ele: any): Animation {
@@ -687,13 +685,14 @@ export class Animation {
 
   _onFinish(hasCompleted: boolean) {
     this.isPlaying = false;
+    this.hasCompleted = hasCompleted;
     var i: number;
 
     for (i = 0; i < this._fFns.length; i++) {
-      this._fFns[i](hasCompleted);
+      this._fFns[i](this);
     }
     for (i = 0; i < this._fOnceFns.length; i++) {
-      this._fOnceFns[i](hasCompleted);
+      this._fOnceFns[i](this);
     }
     this._fOnceFns = [];
   }
diff --git a/ionic/components/app/test/animations/index.ts b/ionic/components/app/test/animations/index.ts
index d2b532b74f..d0ce9de8a8 100644
--- a/ionic/components/app/test/animations/index.ts
+++ b/ionic/components/app/test/animations/index.ts
@@ -22,6 +22,35 @@ class E2EPage {
     a.easing(this.easing);
     a.play();
   }
+
+  memoryCheck() {
+    let self = this;
+    let count = 0;
+
+    function play() {
+      count++;
+      if (count >= 100) {
+        console.log('Play done');
+        return;
+      }
+
+      console.log('Play', count);
+
+      let a = new Animation('.green');
+      a.fromTo('translateX', '0px', '200px');
+      a.duration(self.duration);
+      a.easing(self.easing);
+      a.onFinish((animation) => {
+        setTimeout(() => {
+          play();
+        }, 100);
+        animation.destroy();
+      });
+      a.play();
+    }
+
+    play();
+  }
 }
 
 
diff --git a/ionic/components/app/test/animations/main.html b/ionic/components/app/test/animations/main.html
index 973af82a0c..92b87cb349 100644
--- a/ionic/components/app/test/animations/main.html
+++ b/ionic/components/app/test/animations/main.html
@@ -28,6 +28,10 @@
     <button ion-item (click)="playGreen()">
       Play
     </button>
+
+    <button ion-item (click)="memoryCheck()">
+      Memory Check
+    </button>
   </ion-list>
 
 </ion-content>
diff --git a/ionic/components/nav/nav-controller.ts b/ionic/components/nav/nav-controller.ts
index 8d30071acb..3516e4156a 100644
--- a/ionic/components/nav/nav-controller.ts
+++ b/ionic/components/nav/nav-controller.ts
@@ -1081,13 +1081,13 @@ export class NavController extends Ion {
       }
 
       // create a callback for when the animation is done
-      transAnimation.onFinish((hasCompleted: boolean) => {
+      transAnimation.onFinish((trans: Transition) => {
         // transition animation has ended
 
         // destroy the animation and it's element references
-        transAnimation.destroy();
+        trans.destroy();
 
-        this._afterTrans(enteringView, leavingView, opts, hasCompleted, done);
+        this._afterTrans(enteringView, leavingView, opts, trans.hasCompleted, done);
       });
 
       // cool, let's do this, start the transition