Three.js Helicopter Collision Raycaster Issue

gistfile1.txt

MAIN HELICOPTER CLASS
//////////////////////////////
/////////////////////////////

  collisionDetection(){
		console.log("collisionDetection()");

		const obj = {
			rayCasters: this.rayCasters, 
			collidableMeshList: window.collidableMeshList
		}

		// console.log(obj);

		this.colWorker.postMessage(JSON.stringify(obj));

		// if (this.rayCasters !== undefined) {
		// 	for (let i = 0; i < window.collidableMeshList.length; i++) {
		// 		for (let n = 0; n < this.rayCasters.length; n++) {
		// 			const collisionResults = this.rayCasters[n].intersectObject( window.collidableMeshList[i], true )
		// 			// if ( collisionResults.length > 0 && collisionResults[0].distance < directionVector.length() ) {
		// 			if ( collisionResults.length > 0 ) {
		// 				this.landed = true;
		// 				console.log("Collision with vectorLength")
		// 			}
		// 		}	
		// 	}

		// }

	}

(Excerpt from other file below)
///////////////////////////////////////////////
// Helicopter Collision Detection Web Worker //
//////////////////////////////////////////////

self.addEventListener("message", function(e){

	const data = JSON.parse(e.data);

	if (data.rayCasters !== undefined) {
		for (let i = 0; i < data.collidableMeshList.length; i++) {
			for (let n = 0; n < data.rayCasters.length; n++) {
				console.log(data.rayCasters[n]);
				// data.collidableMeshList[i].updateMatrixWorld()
				const collisionResults = data.rayCasters[n].intersectObjects( data.collidableMeshList[i], true )
				// if ( collisionResults.length > 0 && collisionResults[0].distance < directionVector.length() ) {
				if ( collisionResults.length > 0 ) {
					console.log("Collision");
					self.postMessage(true);
				} else {
					self.postMessage(false);
				}
				self.postMessage(false);
			}	
		}

	}

}, false);