A maintenance supervisor reports he did not follow the correct process in the aircraft maintenance m...

Narrative:

Bell 407 helicopter was inducted to the ZZZ repair station for two cracks located on the right-hand (rh) fuselage. After removal of the paint and filler material it was determined there was no actual structural damage in either locations. The maintenance manual (M/M) states that the action taken for this is to polish out and seal with resin C-363. I mixed up the resin and applied the resin to the bare spots and then applied a heat lamp to this area to speed up the process without referring to the manual. I was also working with purchasing department at the time with some duplicate maintenance tracking issues. I checked the resin every few minutes and the last time I looked; the paint was starting to discolor. I removed heat and began the damage evaluation of the area; this is still ongoing at this time. This event occurred from not performing the correct process per the maintenance manual (M/M) and using the wrong type of equipment.

Original NASA ASRS Text

Title: A Maintenance Supervisor reports he did not follow the correct process in the Aircraft Maintenance Manual (AMM) when he attempted to repair two fuselage cracks on a Bell 407 helicopter.

Narrative: Bell 407 helicopter was inducted to the ZZZ Repair Station for two cracks located on the Right-hand (RH) fuselage. After removal of the paint and filler material it was determined there was no actual structural damage in either locations. The Maintenance Manual (M/M) states that the action taken for this is to polish out and seal with Resin C-363. I mixed up the resin and applied the resin to the bare spots and then applied a heat lamp to this area to speed up the process without referring to the Manual. I was also working with Purchasing Department at the time with some duplicate Maintenance Tracking issues. I checked the resin every few minutes and the last time I looked; the paint was starting to discolor. I removed heat and began the damage evaluation of the area; this is still ongoing at this time. This event occurred from not performing the correct process per the Maintenance Manual (M/M) and using the wrong type of equipment.

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	1065034
Time
Date	201302
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	Bell Helicopter Textron Undifferentiated or Other Model
Flight Phase	Parked
Component
Aircraft Component	Fuselage Skin
Person 1
Function	Other / Unknown
Qualification	Maintenance Powerplant Maintenance Airframe
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Deviation - Procedural Maintenance

A maintenance supervisor reports he did not follow the correct process in the aircraft maintenance manual (amm) when he attempted to repair two fuselage cracks on a bell 407 helicopter.