Definition
In NOTAMs, BERM refers to a snowbank piled along the edge of a runway, taxiway, or ramp that contains earth, gravel, or other debris mixed in with the snow. It is reported because the contamination makes the snowbank harder, denser, and more hazardous than a clean snowbank if struck by an aircraft.
Plain English
A pile of plowed snow next to the pavement that has dirt or gravel mixed into it, making it harder and more dangerous than ordinary snow if a wing or propeller hits it.
Context Anchor
Seen in NOTAMs or other airport condition information during winter operations, especially near runways, taxiways, and ramps.
Derivation
From the Dutch and German word 'berm,' meaning the edge or shoulder of a road. In aviation NOTAMs it keeps that sense of an edge feature alongside the operating surface.
Why Pilots Care
Contact with a berm can damage landing gear, propellers, or engines and may force runway closure until cleared.
Grounding Statement
Picture plowed snow piled along the edge of a taxiway, with dirt and stones mixed through it rather than clean white snow.
Intuition Check
Do not read BERM as just any snow pile or a normal ground shoulder. In this FAA notice context, it means a snowbank that contains earth or gravel.
Example Sentence 1
The NOTAM reported a BERM along the south edge of Taxiway A, so we kept the wingtip well clear during taxi.
Example Sentence 2
Ground crews removed the berm beside the taxiway before the next flight.