A line mechanic reports he was involved with inadvertently installing a leading edge slat on a B767-...

Narrative:

We inadvertently installed # 2 slat that turned out to be 'not-effective' for our aircraft because it had not been modified for the winglet modification (mod) by adding a vortilon to the leading edge. Our illustrated parts catalog (ipc) showed that part number (P/north) XXX-51G was 'effective'; but we missed the part about being modified for winglet aircraft. The aircraft was ferry flight back to the us for final repairs in which the slats were removed again and reinstalled. The correct P/north for the modified slat is 767-XXX-51g1. The aircraft has had the winglets installed for awhile. The winglet modified aircraft have several differences that not everyone is aware of; or even know to look for them. The aircraft never made a revenue flight before the problem was found march 2012; when the captain noticed the vortilon missing and denied the B767-300 aircraft. It was brought back to the hangar where I installed the vortilon early next morning per an engineering authorization (east/a) and a job card for modifying the slat to the [correct] configuration. I re-marked the slat with the new P/north 767-XXX-51g1; which is 'effective' for the aircraft. I then returned the aircraft back to full service. The ipc should be revised to show that only P/north (767-XXX-51g1) is effective for that aircraft; at the #2 slat position.

Original NASA ASRS Text

Title: A Line Mechanic reports he was involved with inadvertently installing a Leading Edge Slat on a B767-300 aircraft that was not 'Effective' for the #2 slat position. The slat had not been modified for winglet modified (mod) aircraft; which required adding a vortilon to the leading edge.

Narrative: We inadvertently installed # 2 slat that turned out to be 'Not-Effective' for our aircraft because it had not been modified for the Winglet Modification (MOD) by adding a vortilon to the leading edge. Our Illustrated Parts Catalog (IPC) showed that Part Number (P/N) XXX-51G was 'Effective'; but we missed the part about being modified for winglet aircraft. The aircraft was Ferry flight back to the U.S. for final repairs in which the slats were removed again and reinstalled. The correct P/N for the modified slat is 767-XXX-51G1. The aircraft has had the winglets installed for awhile. The winglet modified aircraft have several differences that not everyone is aware of; or even know to look for them. The aircraft never made a revenue flight before the problem was found March 2012; when the Captain noticed the vortilon missing and denied the B767-300 aircraft. It was brought back to the Hangar where I installed the vortilon early next morning per an Engineering Authorization (E/A) and a Job Card for modifying the slat to the [correct] configuration. I re-marked the slat with the new P/N 767-XXX-51G1; which is 'Effective' for the aircraft. I then returned the aircraft back to full service. The IPC should be revised to show that only P/N (767-XXX-51G1) is effective for that aircraft; at the #2 slat position.

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	1000034
Time
Date	201203
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZZ.Airport
State Reference	FO
Environment
Light	Daylight
Aircraft 1
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	Parked
Component
Aircraft Component	Leading Edge Slat
Person 1
Function	Technician
Qualification	Maintenance Powerplant Maintenance Airframe
Experience	Maintenance Technician 20
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy

A line mechanic reports he was involved with inadvertently installing a leading edge slat on a B767-300 aircraft that was not 'effective' for the #2 slat position. The slat had not been modified for winglet modified (mod) aircraft; which required adding a vortilon to the leading edge.