Narrative:

An A320 aircraft had a deferred aft galley chiller inoperative. Two aviation maintenance technicians (amt) were assigned to deferred [chiller]. They performed an operational test per maintenance manual (MM) 25-34-51 and found no air flow at [connecting] ducts. They removed the chiller and discovered that the duct; item #150; reference illustrated parts catalog (ipc) chapter 25-33-03a was not installed; thus preventing airflow to duct. They were able to access the back of the galley through the trash compartment access panel in the aft lavatory. This is where they found the duct; lying on water and electrical lines. The aircraft had overnighted [this month] and an amt had replaced the chiller; but in his defense an air flow check is not required per the maintenance manual; only an electrical check. But the aircraft just came from a #3 heavy check in december; [where] the galley was removed and replaced per MM 25-33-41 and does require an airflow check of chiller system. We installed the duct assembly and performed an operational check.

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Original NASA ASRS Text

Title: A Lead Mechanic reports an A320 aircraft arrived with an aft galley chiller deferred. Mechanics found an airflow duct not installed; lying in water and on electrical wires.

Narrative: An A320 aircraft had a deferred aft galley chiller inoperative. Two Aviation Maintenance Technicians (AMT) were assigned to deferred [chiller]. They performed an operational test per maintenance manual (MM) 25-34-51 and found no air flow at [connecting] ducts. They removed the chiller and discovered that the duct; item #150; reference Illustrated Parts Catalog (IPC) Chapter 25-33-03a was not installed; thus preventing airflow to duct. They were able to access the back of the galley through the trash compartment access panel in the aft lavatory. This is where they found the duct; lying on water and electrical lines. The aircraft had overnighted [this month] and an AMT had replaced the chiller; but in his defense an air flow check is not required per the maintenance manual; only an electrical check. But the aircraft just came from a #3 heavy check in December; [where] the galley was removed and replaced per MM 25-33-41 and does require an airflow check of chiller system. We installed the duct assembly and performed an operational check.

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.