Ground service personnel failed to close the potable water service valve and subsequently during fli...

Attributes
ACN	922606
Time
Date	201012
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B737-400
Operating Under FAR Part	Part 121
Flight Phase	Final Approach Initial Approach
Flight Plan	IFR
Component
Aircraft Component	Potable Water Storage control indication
Person 1
Function	Pilot Not Flying Check Pilot Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Deviation - Procedural Published Material / Policy

Narrative:

ILS runway xx. Autopilot (ap) not holding the G/south well. Turned off ap and found that the aircraft was pitch sensitive. Normal flaps 40 landing and roll out. While taxing in the rj that landed behind us told us that he saw a large chunk of ice come off our tail upon landing and we now had water running out of the aircraft belly. Went to gate. Maintenance found that the previous station ground people had not drained and secured the water tank valve correctly. We were leaking water in flight and had built up enough ice on the belly and tail skid that I could feel it in the pitch of the aircraft. People not doing their job correctly. Train of replace the people to do the overnight duties correctly.

Original NASA ASRS Text

Title: Ground Service Personnel failed to close the potable water service valve and subsequently during flight water flowed out; then back on the fuselage and froze near the tail skid causing a slight pitch instability. The ice fell off on landing.

Narrative: ILS Runway XX. Autopilot (AP) not holding the G/S well. Turned off AP and found that the aircraft was pitch sensitive. Normal flaps 40 landing and roll out. While taxing in the RJ that landed behind us told us that he saw a large chunk of ice come off our tail upon landing and we now had water running out of the aircraft belly. Went to gate. Maintenance found that the previous station ground people had not drained and secured the water tank valve correctly. We were leaking water in flight and had built up enough ice on the belly and tail skid that I could feel it in the pitch of the aircraft. People not doing their job correctly. Train of replace the people to do the overnight duties correctly.

Data retrieved from NASA's ASRS site as of April 2012 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.

Ground service personnel failed to close the potable water service valve and subsequently during flight water flowed out; then back on the fuselage and froze near the tail skid causing a slight pitch instability. The ice fell off on landing.