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EMAW 12-27-2021 11:22 AM


Originally Posted by Twin Wasp (Post 3342494)
On a Boeing it’s the airborne vibration monitor, those numbers that pop up every once in a while on the engine display.

the 135 also has a vibration monitor that is visible to the pilots.

Cujo665 12-31-2021 03:04 AM


Originally Posted by Twin Wasp (Post 3342494)
On a Boeing it’s the airborne vibration monitor, those numbers that pop up every once in a while on the engine display.

Never heard it called that, but okay. Our Boeing FCOM calls it the Engine Vibration Display.
The EMB has something similar LP & HP Vib display on the EICAS

JohnBurke 01-01-2022 04:38 PM

The vibration monitor is an engine manufacturer function. Aircraft manufacturers using that function may call it by different names, even when using the same engine . While several factors can influence the vibration indication, it primarily monitors shaft bearing stability. Think of it as a compressor and turbine bearing health indicator.

Cujo665 01-03-2022 04:25 PM


Originally Posted by EMAW (Post 3342687)
the 135 also has a vibration monitor that is visible to the pilots.

all variations of the 135-140-145 have the display.
It’s the High Pressure & Low Pressure Vibration Indicators on the EICAS.

the AE3007 A1 & A1/3 FADEC variants both provide the data,
it’s essentially begins life as a GE helicopter engine, and the last folks to bolt on their stuff is Allison/Rolls creating an AE3007.
The two most common FADEC versions are the A1 and the A1/3
good little engine.


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