FAA's Reported Wire Incidents – July 2008

Author: Lectromec GSD Team

August 7, 2008

The following are the wire incidents reported in the FAA’s July 2008 Advisory Circular 43-16A [http://www.faa.gov/aircraft/safety/alerts/aviation_maintenance/media/2008/2008_07_Alert.pdf]

Incident #1 

FAA Control Number: CA080407002

Part Name: WIRE HARNESS

Part Condition: MISINSTALLED

Difficultly Date: 3/31/2008

Part Number: 472011

Part Location: NLG WOW

An operator found that during installation of mod sum 4-125401, finding the new harnesses PN.47201-1 three out of six harnesses pulled from stock were miss wired.  On connector 3261-P32 pins a-b and d-e were wired reversed.  Harnesses appropriately repaired IAW manufacturer provided data and returned to stock. To address this issue, service letter DH8-SL-32-014A advising of possible manufacturing faults was raised.

 Incident #2

FAA Control Number: CA080409001

Aircraft Make: AIRBUS

Aircraft Model: A310304

Engine Make: GE

Engine Model: CF680C2*

Part Name: WIRE

Part Condition: BURNED

Difficultly Date: 3/25/2008

Part Number: 40900011

Part Location: COFFEEMAKER

In cruise aft galley RT coffeemaker burned.  All C/B’s were pulled.  Halon fire extinguisher was used as a precautionary measure.  C/B on coffee maker found popped.  Found wires to pressure switch burned and disconnected.  No other wiring damage on the coffee maker.  Coffee maker replaced and routed to shop for repair.

 Incident #3

FAA Control Number: CA080320005

Aircraft Make: CESSNA

Aircraft Model: 172S

Engine Make: LYC

Engine Model: IO360L2A

Component Make: PRECISIONWND

Part Name: GASKET

Part Condition: LOOSE

Difficultly Date: 3/14/2008

Part Number: 365533

Part Location: FCU

AD2008-06-51 fuel injection servo plugs, servo plugs found loose upon inspection. Servo plug seals replaced with new as per the conversation with precision airmotive representative.  Engine remanufacture date of Sept. 8, 2005 does not fall within the dates specified that are affected by the airworthiness directive.  However, the servo plugs were loose. Right magneto p-lead wire broken.  (TC NR 20080320005)

 Incident #4

FAA Control Number: CA080402001

Aircraft Make: DHAV

Aircraft Model: DHC8311

Engine Make: PWA

Engine Model: PW123

Part Name: HEATER

Part Condition: SMOKE

Difficultly Date: 3/31/2008

Part Location: WINDSHIELD

(CAN) during climb, the crew observed smoke in the cockpit and quickly noticed that the smoke was coming from the LT windshield electrical terminals.  The windshield heating system was turned off and the smoke stopped.  Decision was made to turn back and the aircraft landed without further incident.  Line maintenance discovered that the LT windshield L1 terminal wire NR 3041-48B12C was burnt.  The RT windshield terminals were inspected and the L2 terminal wire NR 3041-40A12NA was found with burnt marks.  Both wires were replaced and the system tested

Serviceable.  The aircraft was released and a verification flight was conducted.  (TC NR 20080402001)