A line mechanic reported an A330 aircraft that had come out of a heavy check with the door emergency...

Narrative:

An A330 aircraft came out of heavy check I believe march 2011. I accomplished a routine check on the aircraft two days later. [Jobcard] has you check door assist bottle pressure. To do this; I opened the door just enough to look down at the gage. When checking it this way the firing mechanism is not exposed. [On] the next routine check [two days later]; the safety pins were found in some of the door assist firing mechanisms. They were believed to have been installed at the heavy check. The event occurred because maintenance personnel from the heavy check did not remove the pins as required. Once the [bottle] safety pins were found; the pins were removed. Suggest [having] a sign-off for removing the pins at a heavy check; if there isn't one already. On the routine check; put verbiage in to check the [bottle] firing mechanism along with the [bottle] pressure.

Original NASA ASRS Text

Title: A Line Mechanic reported an A330 aircraft that had come out of a heavy check with the door emergency assist bottle safety pins still installed on some of the passenger cabin doors. The aircraft had been flying for three days.

Narrative: An A330 aircraft came out of heavy check I believe March 2011. I accomplished a routine check on the aircraft two days later. [Jobcard] has you check door assist bottle pressure. To do this; I opened the door just enough to look down at the gage. When checking it this way the firing mechanism is not exposed. [On] the next routine check [two days later]; the safety pins were found in some of the door assist firing mechanisms. They were believed to have been installed at the heavy check. The event occurred because maintenance personnel from the heavy check did not remove the pins as required. Once the [bottle] safety pins were found; the pins were removed. Suggest [having] a sign-off for removing the pins at a heavy check; if there isn't one already. On the routine check; put verbiage in to check the [bottle] firing mechanism along with the [bottle] pressure.

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.

Attributes
ACN	941441
Time
Date	201103
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	A330
Operating Under FAR Part	Part 121
Flight Phase	Parked
Component
Aircraft Component	Exterior Pax/Crew Door
Person 1
Function	Technician
Qualification	Maintenance Airframe Maintenance Powerplant
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy

A line mechanic reported an A330 aircraft that had come out of a heavy check with the door emergency assist bottle safety pins still installed on some of the passenger cabin doors. The aircraft had been flying for three days.