code: function land(options, callback) {
    if (typeof options === 'function') {
      callback = options;
      options = {};
    }
    this.logger('RollingSpider#land');
    if (this.status.flying) {
      this.writeTo(
        'fa0b',
        new Buffer([0x02, ++this.steps.fa0b & 0xFF, 0x02, 0x00, 0x03, 0x00])
      );
  
      this.on('flyingStatusChange', function(newStatus) {
        if (newStatus === 0) {
          this.status.flying = false;
          if (typeof callback === 'function') {
            callback();
          }
        }
      });
  
    } else {
      this.logger('Calling RollingSpider#land when it\'s not in the air isn\'t going to do anything');
      if (callback) {
        callback();
      }
    }
  }
docs: Instructs the drone to land if it's in the air.