| 6.22.6.2.2. | In the event of a failure of this device, the passing-beam shall not assume a position in which the dip is less than it was at the time when the failure of the device occurred. | a0c0 |
| 6.22.6.2.2. | In the event of a failure of this device, the passing-beam shall not assume a position in which the dip is less than it was at the time when the failure of the device occurred. | a0c0 |