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| L-1011 Aural Warning Unit |
The L-1011 has a set of somewhat very distinct cockpit sounds. The sounds are created by an "Aural Warning Unit" located right underneath the second officer console. Finding this unit in L-1011 surplus and scrap was not particularly easy however, I got my hands on one that is in really neat shape and is an original L-1011 unit. The serial number on the unit is #160 so it's from somewhere out of the middle of the production run. The Aural Warning Unit produces audible alerts for:
- Unsafe Landing
- Unsafe Takeoff
- Cabin Pressure
- Altitude Alert
- Flap Load Relieving
- Overspeed Clacker
- Autopilot Disconnect
The unit features two speakers ... there are actually two audio systems in the unit the Clacker has a discrete speaker and the rest of the oscillator driven warnings have their own speaker.
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| L-1011 Aural Warning Unit Speakers |
Thanks for the video warning, the audio is indeed loud – good thing I turned my headphones down a little. By the way, thanks for discussing the L-011 Aural Warning Unit. This is a nice avionics testing equipment.
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