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A B737-500 parked overnight had an air conditioning unit run at full cold in high ambient humidity. Cabin and cockpit wet and many electronic problems.
| Attributes | |
| ACN | 591475 |
| Time | |
| Date | 200308 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-500 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : preflight ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 591475 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : weather performance deficiency : installation performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Environmental Factor Company Weather |
| Primary Problem | Maintenance Human Performance |
Narrative:
1ST flight of day. Plane overnight at gate with ground air conditioning on full cold. High ambient humidity. On boarding found entire aircraft interior dripping with water. Flight attendants were wiping off the seats and drips from the overhead. Cockpit looked like someone had sprayed a hose in it. Parking brake light was off, but brake was set. Left CDU was accepting only some commands though right CDU was normal. Left CDU 'enter' light was inoperative on some pages and some information could not be entered on the left CDU. Started APU and put heat on aircraft. Unplugged ground air. Plane dried, cockpit lights returned to normal and left CDU regained normal functioning. I would guess that everything below the cockpit and cabin floor was as wet as the cockpit and cabin. Interior temperature was in the 50's with the ground air cooling.
Original NASA ASRS Text
Title: A B737-500 PARKED OVERNIGHT HAD AN AIR CONDITIONING UNIT RUN AT FULL COLD IN HIGH AMBIENT HUMIDITY. CABIN AND COCKPIT WET AND MANY ELECTRONIC PROBS.
Narrative: 1ST FLT OF DAY. PLANE OVERNIGHT AT GATE WITH GND AIR CONDITIONING ON FULL COLD. HIGH AMBIENT HUMIDITY. ON BOARDING FOUND ENTIRE ACFT INTERIOR DRIPPING WITH WATER. FLT ATTENDANTS WERE WIPING OFF THE SEATS AND DRIPS FROM THE OVERHEAD. COCKPIT LOOKED LIKE SOMEONE HAD SPRAYED A HOSE IN IT. PARKING BRAKE LIGHT WAS OFF, BUT BRAKE WAS SET. L CDU WAS ACCEPTING ONLY SOME COMMANDS THOUGH R CDU WAS NORMAL. L CDU 'ENTER' LIGHT WAS INOP ON SOME PAGES AND SOME INFO COULD NOT BE ENTERED ON THE L CDU. STARTED APU AND PUT HEAT ON ACFT. UNPLUGGED GND AIR. PLANE DRIED, COCKPIT LIGHTS RETURNED TO NORMAL AND L CDU REGAINED NORMAL FUNCTIONING. I WOULD GUESS THAT EVERYTHING BELOW THE COCKPIT AND CABIN FLOOR WAS AS WET AS THE COCKPIT AND CABIN. INTERIOR TEMP WAS IN THE 50'S WITH THE GND AIR COOLING.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.