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#10
April 15th 04, 02:03 AM
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"Maule Driver" wrote
That's glider stuff. You tap it instead of allowing engine vibration to do it. In the B-707, the altimeter had a built-in altimeter-tapper at about two cps. This was required equipment in the event that the electronic altimeter correction failed or was turned off. Turning the correction off, turned on the tapper. Bob Moore 
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