An experienced aircraft maintenance technician (amt) was informed that a # 1 slat can compartment wa...

Narrative:

I received notice that during a scheduled routine inspection; the #1 slat can had sustained damage on a B737-300 aircraft. The #1 slat was replaced on a c-check by me as evidenced on non-routine card. I did have assistance; however; I don't recall who specifically that person(s) was. Although it has been over nine months since I replaced that slat; I am confident that the subject [slat track] downstop was installed at that time in accordance with the aircraft maintenance manual (amm). In addition; this task is a required inspection item (rii) and was identified and inspected as such. With over 24-years as licensed aircraft maintenance technician (amt); I have performed numerous slat replacements and know how critical it is to ensure that no debris is allowed to enter the slat can. This aircraft has been through numerous maintenance visits since that c-check to include a [phased] heavy maintenance visit. [I was] on duty twenty-two hours.

Original NASA ASRS Text

Title: An experienced Aircraft Maintenance Technician (AMT) was informed that a # 1 Slat Can compartment was found damaged on a B737-300 aircraft after he had replaced the slat. The aft downstop on one of the slat's main track arm's had fallen into the compartment.

Narrative: I received notice that during a scheduled Routine Inspection; the #1 Slat Can had sustained damage on a B737-300 aircraft. The #1 Slat was replaced on a C-Check by me as evidenced on Non-Routine Card. I did have assistance; however; I don't recall who specifically that person(s) was. Although it has been over nine months since I replaced that slat; I am confident that the subject [Slat track] downstop was installed at that time in accordance with the Aircraft Maintenance Manual (AMM). In addition; this task is a Required Inspection Item (RII) and was identified and inspected as such. With over 24-years as licensed Aircraft Maintenance technician (AMT); I have performed numerous slat replacements and know how critical it is to ensure that no debris is allowed to enter the Slat Can. This aircraft has been through numerous Maintenance Visits since that C-Check to include a [Phased] Heavy Maintenance Visit. [I was] on duty twenty-two hours.

Data retrieved from NASA's ASRS site as of July 2013 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	1077517
Time
Date	201205
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Night
Aircraft 1
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	Parked
Component
Aircraft Component	Leading Edge Slat
Person 1
Function	Technician
Qualification	Maintenance Airframe Maintenance Powerplant
Experience	Maintenance Technician 24
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy

An experienced aircraft maintenance technician (amt) was informed that a # 1 slat can compartment was found damaged on a B737-300 aircraft after he had replaced the slat. The aft downstop on one of the slat's main track arm's had fallen into the compartment.