A B737-400 maintenance person attempts to clear the logbook write-up of a 'no hot water' after an overnight and finds the circuit breakers still pulled and collared for a disinfecting procedure.

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Attributes
ACN	627745
Time
Date	200408
Day	Thu
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-400
Operating Under FAR Part	Part 121
Flight Phase	ground : parked
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
ASRS Report	627745
Person 2
Affiliation	company : air carrier
Function	oversight : supervisor
Events
Anomaly	aircraft equipment problem : less severe cabin event other maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : published procedure non adherence : far non adherence : company policies
Independent Detector	other other : 1
Resolutory Action	other
Consequence	other
Factors
Maintenance	contributing factor : engineering procedure performance deficiency : repair performance deficiency : scheduled maintenance performance deficiency : testing
Supplementary
Problem Areas	Company Aircraft Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

I was assigned to perform a walkaround on aircraft on the morning of aug/thu/04. I did my walkaround and checked the logbook. There were 2 write-ups. One was avionics and they took care of that. The other was on the forward lavatory 'no hot water.' I was unable to reset the heater, so I started looking for a deferral. I looked under MEL 25-10A, lavatory sink hot water 'int' deferral and the procedures led to pulling associated circuit breakers on P-18 panel. So with a circuit breaker collar in my hand, I headed to the P-18 circuit breaker panel and found '4EA' circuit breakers pulled and tagged with mig-51A -- 1 on the water line heater and 3 on lavatory water heaters circuit breaker. I contacted my supervisor and discovered that on the overnight package there was a potable water disinfect 'west/C' accomplished. I made sure the tank was svced to full, reset the breakers and accomplished water heaters operations check per applicable maintenance manual reference and cleared log page.

Original NASA ASRS Text

Title: A B737-400 MAINT PERSON ATTEMPTS TO CLR THE LOGBOOK WRITE-UP OF A 'NO HOT WATER' AFTER AN OVERNIGHT AND FINDS THE CIRCUIT BREAKERS STILL PULLED AND COLLARED FOR A DISINFECTING PROC.

Narrative: I WAS ASSIGNED TO PERFORM A WALKAROUND ON ACFT ON THE MORNING OF AUG/THU/04. I DID MY WALKAROUND AND CHKED THE LOGBOOK. THERE WERE 2 WRITE-UPS. ONE WAS AVIONICS AND THEY TOOK CARE OF THAT. THE OTHER WAS ON THE FORWARD LAVATORY 'NO HOT WATER.' I WAS UNABLE TO RESET THE HEATER, SO I STARTED LOOKING FOR A DEFERRAL. I LOOKED UNDER MEL 25-10A, LAVATORY SINK HOT WATER 'INT' DEFERRAL AND THE PROCS LED TO PULLING ASSOCIATED CIRCUIT BREAKERS ON P-18 PANEL. SO WITH A CIRCUIT BREAKER COLLAR IN MY HAND, I HEADED TO THE P-18 CIRCUIT BREAKER PANEL AND FOUND '4EA' CIRCUIT BREAKERS PULLED AND TAGGED WITH MIG-51A -- 1 ON THE WATER LINE HEATER AND 3 ON LAVATORY WATER HEATERS CIRCUIT BREAKER. I CONTACTED MY SUPVR AND DISCOVERED THAT ON THE OVERNIGHT PACKAGE THERE WAS A POTABLE WATER DISINFECT 'W/C' ACCOMPLISHED. I MADE SURE THE TANK WAS SVCED TO FULL, RESET THE BREAKERS AND ACCOMPLISHED WATER HEATERS OPS CHK PER APPLICABLE MAINT MANUAL REF AND CLRED LOG PAGE.

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.