Mechanic reports he found vertical stabilizer panel #322EL with numerous loose and shanked fasteners (screws too long); during a c-check on a B777-200. Lack of sealant around the panel and improper screws allowed the panel to vibrate and become totally delaminated internally.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	948309
Time
Date	201105
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	B777-200
Operating Under FAR Part	Part 121
Flight Phase	Parked
Component
Aircraft Component	Vertical Stabilizer/Fin
Person 1
Function	Technician
Qualification	Maintenance Airframe Maintenance Powerplant
Experience	Maintenance Technician 35
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy

Narrative:

While removing the vertical stabilizer panel #322EL; on the left side of the [vertical stab] leading edge; found lots of fasteners loose and shanked-out [too long]. Also none of the panels on the left or the right side of the vertical stab was sealed.

Original NASA ASRS Text

Title: Mechanic reports he found Vertical Stabilizer panel #322EL with numerous loose and shanked fasteners (screws too long); during a C-Check on a B777-200. Lack of sealant around the panel and improper screws allowed the panel to vibrate and become totally delaminated internally.

Narrative: While removing the Vertical Stabilizer panel #322EL; on the left side of the [Vertical Stab] leading edge; found lots of fasteners loose and shanked-out [too long]. Also none of the panels on the left or the right side of the Vertical Stab was sealed.

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.