An aircraft avionics technician reports finding six relay bases installed incorrectly; contacting structure and adjacent relays inside the left P-110 power panel located in the lower main equipment center (mec) on a B777-200 aircraft.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	1154001
Time
Date	201402
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	Electrical Distribution Relay
Person 1
Function	Technician
Qualification	Maintenance Airframe Maintenance Powerplant Maintenance Avionics
Experience	Maintenance Avionics 12 Maintenance Technician 3
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural FAR Deviation - Procedural Published Material / Policy

Narrative:

Upon opening P-110 power panel to install new wiring; found six relay bases installed incorrectly. Because of improper installation of the bases; four of the installed relays were contacting panel structure or the adjacent relay. Relay bases affected: DK23022; DK23025; DK23040; DK23041; DK23042 and DK23043.

Original NASA ASRS Text

Title: An Aircraft Avionics Technician reports finding six relay bases installed incorrectly; contacting structure and adjacent relays inside the Left P-110 Power Panel located in the lower Main Equipment Center (MEC) on a B777-200 aircraft.

Narrative: Upon opening P-110 Power Panel to install new wiring; found six relay bases installed incorrectly. Because of improper installation of the bases; four of the installed relays were contacting panel structure or the adjacent relay. Relay bases affected: DK23022; DK23025; DK23040; DK23041; DK23042 and DK23043.

Data retrieved from NASA's ASRS site 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.