Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Distraction; Human-Machine Interface
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Requested ATC Assistance / Clarification
Aircraft; Company Policy
This has been a subject that's received more and more comment on the flight deck as this year has gone by. The Challenger 350's voice annunciations on the ground are so loud that crewmembers can't hear each other or ATC while they're in progress. This frequently forces crewmembers to delay the callouts required by the AOM [Aircraft Operating Manual] until the voice annunciation has run its course. Particularly the 'cleared left; cleared to cross...cleared right' call taxiing across runways; and runway alignment calls when preparing for takeoff. These two types of situation can lead to delays in crossing an active runway; and delays in setting takeoff power after being cleared for takeoff. However; things came to a head yesterday when we were rolling out on Runway XX at ZZZ. It's a shorter runway; and the PF [Pilot Flying] elected to roll to the end before turning off. We were doing less than 20 knots; but the airplane was screaming so loudly that we had 200 feet remaining and 100 feet remaining that we could not hear Tower's taxi instructions twice. Twice we had to ask Tower to repeat himself; finally hearing him on the third attempt. This is not just annoying. Nor is it just a nuisance. This is an outright safety problem. I fully understand why the system is set up to prevent pilots from setting the volume on the annunciations. And the first thing the reader is going to suggest is that pilots turn up the volume on their ATC radios and interphone. Turning those up loud enough to override the aircraft annunciations would be downright painful. The annunciations are loud enough to wake the dead. And certainly far louder than necessary to be heard by a living human who has passed an FAA First Class physical examination. Surely; the annunciation volume can be adjusted through maintenance action. I suggest the company take advantage of this ability to set the volume at a more sensible level - loud enough to capture the crew's attention; but not loud enough to drown out all other communication.
CL350 First Officer reported the aircraft's voice annunciations on the ground are so loud that crewmembers have difficulty communicating.