The TELEX Mic Muff 800456-019 is a replacement microphone windscreen (foam mic cover) designed specifically for the Telex Airman 850 aviation headset.

It is mounted directly over the boom microphone and serves to reduce wind noise, breath noise, and cockpit ambient airflow interference, improving clarity of transmitted speech during flight operations.

This part is listed by Telex as the official replacement windscreen for the Airman 850 headset microphone system.

Key features include:

OEM microphone windscreen for Telex Airman 850
Reduces wind, breathing, and cockpit noise interference
Improves voice transmission clarity to ATC and crew
Precision-fit for noise-canceling electret boom microphone
Foam construction for lightweight acoustic damping
Direct replacement part: PN 800456-019
Tool-free installation (slips over mic capsule)
Designed for aviation-grade headset communication systems
Consumable maintenance item (replaced when foam degrades)
Compatible only with Airman 850 microphone assembly