 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Mechanic reports a B747-400 aircraft aft flap to fuselage accordion seal was damaged; removed and deferred under a configuration deviation list (cdl) procedure. Mechanic notes; the aircraft was flown illegally because the entire accordian seal assembly structure had actually been removed and the cdl only allowed for a seal deferral.
| Attributes | |
| ACN | 980587 |
| Time | |
| Date | 201111 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | B747-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Trailing Edge Flap |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy |
Narrative:
On aircraft aft flap; left side; flap to fuselage seal (accordion seal) was damaged and was removed from aircraft X; a B747-400 aircraft; and flown under cdl deferral; but was done illegally. The entire structure; seal and all was removed. Per the cdl; only the seal can be deferred. Also; the entire component was overhauled without an overhaul shop manual. Per our maintenance manual (M/M); only the seal is covered by removal and installation. The accordion seal assembly was removed from aircraft Y and I was instructed by management to install it on aircraft X. The assembly did not have proper documentation that it was a serviceable unit and ready to be installed. Nothing showed that all work was completed that made it a serviceable unit.
Original NASA ASRS Text
Title: Mechanic reports a B747-400 aircraft aft flap to fuselage accordion seal was damaged; removed and deferred under a Configuration Deviation List (CDL) procedure. Mechanic notes; the aircraft was flown illegally because the entire accordian seal assembly structure had actually been removed and the CDL only allowed for a seal deferral.
Narrative: On aircraft aft flap; left side; flap to fuselage seal (Accordion Seal) was damaged and was removed from Aircraft X; a B747-400 aircraft; and flown under CDL deferral; but was done illegally. The entire structure; seal and all was removed. Per the CDL; only the seal can be deferred. Also; the entire component was overhauled without an Overhaul Shop Manual. Per our Maintenance Manual (M/M); only the seal is covered by removal and installation. The Accordion Seal Assembly was removed from Aircraft Y and I was instructed by Management to install it on Aircraft X. The assembly did not have proper documentation that it was a serviceable unit and ready to be installed. Nothing showed that all work was completed that made it a serviceable unit.
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.