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Aviation Alerts and Advisories

Service Alert 21121 Rev B: Aural Alerts Volume Low Over Speaker

REVISION B:

Added Resolution

PRODUCTS AFFECTED:

Textron Aviation Inc. (Beechcraft) King Air model C90A, C90GT, and C90GTi aircraft equipped with all of the following are affected:

  • G1000 NXi Integrated Flight Deck per STC SA01456WI-D
  • G1000 NXi System Software Version 3557.00 or 3557.01

NOTE
Use the FMS knob to select the ‘AUX – System Status’ page to view the System Software Version. The System Software Version is shown in the upper right box.

  • Aural Tone Generators
  • GMA 1360 Audio Panels

ISSUE:

Aircraft aural alerts (Stall / Gear) volume over speakers may not be audible in flight.

PILOT ACTION:

Wear a headset while flying.

RESOLUTION:

Contact your local dealer for incorporation of Garmin STC Service Bulletin 21122.

Service Alert 21121 Rev B