Narrative:

I have been an avionics technician at air carrier X for 20-plus years and am currently on the B767 maintenance dock in ZZZ. Lately; while working the emergency battery airworthiness directive (ad) engineering order (eo) modification (mod); I have noticed [electrical] wires that appear not to be in accordance with the standard wiring practices manual (swpm). The majority of wiring concerns are located inside and around the P36 power panel; as well in the overhead P5 panel in the flight deck. What I have seen and repaired are clamps jumped; missing tie-wraps; clamping too large and/or missing; wires rubbing on structure and not routed in bundles. On one airplane; a small bundle of wires appear to be banjoed across a section of the east/east compartment in midair. I have documented these issues with pictures and used the resources available to me including lead mechanics; technical support; union representative contacts and company engineering. As I am assigned the work; I have been repairing what I can see; but wonder if I may have missed some other issues within and beyond the scope of the ad mod we are currently doing. The last few airplanes that have been through our maintenance dock have had wire issues of one form or another. I am not sure of the exact state of these airplanes and am worried that if left alone the rubbing and chafing could get worse. My other concern is how many of our B767 fleet has similar issues related to the P36 panel and the pilot's overhead areas. I strongly feel this is a serious issue and it's not getting the support and attention warranted.

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Original NASA ASRS Text

Title: An Avionics Maintenance Technician (AMT) reports finding improper and unsafe routing installations of wire bundles in P36 power panels and cockpit overhead P5 panels on numerous B767-300 aircraft. Technician also raises concerns about aircraft safety; the potential for electrical fires from unsecured and chaffing wire bundles; especially on over water ETOPS aircraft.

Narrative: I have been an Avionics Technician at Air Carrier X for 20-plus years and am currently on the B767 Maintenance Dock in ZZZ. Lately; while working the Emergency Battery Airworthiness Directive (AD) Engineering Order (EO) Modification (MOD); I have noticed [electrical] wires that appear not to be in accordance with the Standard Wiring Practices Manual (SWPM). The majority of wiring concerns are located inside and around the P36 Power Panel; as well in the Overhead P5 Panel in the flight deck. What I have seen and repaired are clamps jumped; missing tie-wraps; clamping too large and/or missing; wires rubbing on structure and not routed in bundles. On one airplane; a small bundle of wires appear to be banjoed across a section of the E/E compartment in midair. I have documented these issues with pictures and used the resources available to me including Lead Mechanics; Technical Support; Union Representative contacts and Company Engineering. As I am assigned the work; I have been repairing what I can see; but wonder if I may have missed some other issues within and beyond the scope of the AD MOD we are currently doing. The last few airplanes that have been through our Maintenance Dock have had wire issues of one form or another. I am not sure of the exact state of these airplanes and am worried that if left alone the rubbing and chafing could get worse. My other concern is how many of our B767 fleet has similar issues related to the P36 panel and the pilot's overhead areas. I strongly feel this is a serious issue and it's not getting the support and attention warranted.

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.