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A line mechanic reports about the lack of any specific reference in the B777 maintenance manual (M/M) providing guidance on what to do 'after' fluid penetration into the forward main equipment center (mec) tunnel and lower lobe areas has occurred. Mechanic noted the B767 M/M does provide detailed instructions for similar galley spills.
| Attributes | |
| ACN | 1050458 |
| Time | |
| Date | 201211 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B777-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Fuselage |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
I was in the forward avionics bay on a B777-200 aircraft and noticed a dried coffee stain in the right-hand (right/H) tunnel area. Apparently; there was a leak from the forward galley into the lower-41 at one time. The B777 doesn't have any specific reference to address a spill into the lower lobe from the galley. Maintenance manual (MM) 53-01-01-4 (which pertains to floor board removal and installation) clearly states the dangers of water penetration but there are no references I can find in the B777 manuals that provide guidance how to handle this scenario.B767 MM 05-51-13 provides detail instructions on how to answer water penetration into the lower lobe. Hence; there is no individual interpretation on how to handle a galley spill on the B767 fleet. I believe the B777 [fleet] should have a similar galley spill reference written in the MM.
Original NASA ASRS Text
Title: A Line Mechanic reports about the lack of any specific reference in the B777 Maintenance Manual (M/M) providing guidance on what to do 'after' fluid penetration into the forward Main Equipment Center (MEC) tunnel and lower lobe areas has occurred. Mechanic noted the B767 M/M does provide detailed instructions for similar galley spills.
Narrative: I was in the forward avionics bay on a B777-200 aircraft and noticed a dried coffee stain in the right-hand (R/H) tunnel area. Apparently; there was a leak from the forward galley into the Lower-41 at one time. The B777 doesn't have any specific reference to address a spill into the lower lobe from the galley. Maintenance Manual (MM) 53-01-01-4 (which pertains to floor board removal and installation) clearly states the dangers of water penetration but there are no references I can find in the B777 Manuals that provide guidance how to handle this scenario.B767 MM 05-51-13 provides detail instructions on how to answer water penetration into the lower lobe. Hence; there is no individual interpretation on how to handle a galley spill on the B767 fleet. I believe the B777 [fleet] should have a similar galley spill reference written in the MM.
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.