A300
Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Communication Breakdown; Troubleshooting
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
General Maintenance Action; General Release Refused / Aircraft Not Accepted
Weather; Human Factors; Procedure
Arrived at A/C with [main cabin] door open and entry door closed with moderate rain. Water was on the floor with no absorbent pads being used. I wrote up water inspection required; and MX personnel inspected the E&E [Electronic and Equipment] compartment and signed it off as good. Later in my preflight; Avionics Tech was called due to GPWS not testing. Upon entering the E&E compartment; he said it was full of water and that several cannon plugs and avionic boxes were soaked. The GPWS box was shorted out due to water. The water was leaking from a bad seal between the flooring and I-beams; not the usual place it leaks and thus the water diverters that have been installed were not working to keep the water away from the avionics. I wrote up the water intrusion a second time and MX was called back out to soak up the water. As a crew; we discussed the situation and were not comfortable taking the aircraft with the current weather.Lack of following company procedures for preventing water intrusions on the Airbus. In this situation; the initial water intrusion inspection by MX was incomplete. My biggest concern here is that I was getting conflicting stories from MX and Avionics. I lost confidence in MX after initial inspection was found to be incomplete and signed off. The Avionics Tech sounded very concerned with what he found. If the GPWS had not failed; the avionics techs would not have been called and we would have departed with water in the aircraft in marginal weather. Maybe we should have avionic techs do the water intrusion inspections rather than the line MX personnel.
A300 Captain reported arriving to aircraft with main cabin door open while it was raining. Inspection was completed and signed off by Maintenance; but Avionics Tech found E&E compartment filled with water.