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A line mechanic reported a B767-300 number one engine aft pylon drain tube was found plugged during an a-check. During efforts to unplug the drain tube with alcohol; per their job card and maintenance manual procedures; fluid had seeped into the internal area of the pylon lower heat shield and leaked from the metal seams.
| Attributes | |
| ACN | 897291 |
| Time | |
| Date | 201007 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Nacelle/Pylon Main Structure |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
A B767-300 aircraft had a maintenance a-check performed. During the check of the pylon drains; the aircraft mechanic found the number one aft pylon drain tube plugged and the alcohol would not drain [down through the tube]. After further investigation and more alcohol had been poured into the aft section of number one pylon the fluid seeped into the internal area of the pylon lower heat shield and leaked from the sheet metal seams. A write-up was made against the aircraft for this item.
Original NASA ASRS Text
Title: A Line Mechanic reported a B767-300 Number One engine Aft Pylon drain tube was found plugged during an A-Check. During efforts to unplug the drain tube with alcohol; per their Job card and Maintenance Manual procedures; fluid had seeped into the internal area of the Pylon lower heat shield and leaked from the metal seams.
Narrative: A B767-300 aircraft had a Maintenance A-Check performed. During the check of the pylon drains; the aircraft Mechanic found the number one Aft Pylon Drain tube plugged and the alcohol would not drain [down through the tube]. After further investigation and more alcohol had been poured into the aft section of number one pylon the fluid seeped into the internal area of the pylon lower heat shield and leaked from the sheet metal seams. A write-up was made against the aircraft for this item.
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.