English: An underwater locator beacon (ULB) for use with a Flight Data Recorder or Cockpit Voice Recorder, with a ballpoint pen to provide scale. The ULB battery life expiry date (July 2014) is visible on the data label.
日付
2015年3月9日 (当初のアップロード日)
原典
Digital image of ULB taken by YSSYguy on 25 February 2015 and uploaded for use in the Flight recorder article. YSSYguy (talk) 01:55, 9 March 2015 (UTC)
An underwater locator beacon (ULB) for use with a Flight Data Recorder or Cockpit Voice Recorder, with a ballpoint pen to provide scale. The ULB battery life expiry date (July 2014) is visible on the data label. Digital image of ULB taken by YSSYguy o...