SDR ASAA2019101651020

Service difficulty report · Wire Harness · Boeing 737990ER

Difficulty date: October 15, 2019
Submitted: October 16, 2019
Operation: Air carrier
Aircraft: N435AS
Make and model: Boeing 737990ER
Aircraft serial: 43292
Aircraft time: 23,713 hours, 7,670 cycles
System (JASC): 2697 · Fire Protection System Wiring
Part: Wire Harness
Part number: CA24301
Condition: Damaged
Location: Fire Detection
Stage of operation: IN
How discovered: V
Nature of condition: O
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

FOUND DAMAGE TO BRAIDING OF MW0325 AND MW0326 CORE FIRE DETECTION HARNESSES. GROUNDED - YES. REMOVED AND REPLACED MW0325 AND MW0326 CORE FIRE DETECTION HARNESSES, INSTALLATION TEST OK, REF AMM 26-11-02. OPENED, TAGGED, AND RESET 2CB'S. ETOPS SIGNIFICANT SYSTEM GROUND VERIFICATION SUCCESSFUL.