SDR ASMF201901090013

Service difficulty report · Control Unit · Boeing 7879

Difficulty date: December 14, 2018
Submitted: January 9, 2019
Operation: Air carrier
Aircraft: N438AM
Make and model: Boeing 7879
Aircraft serial: 43862
Aircraft time: 8,400 hours, 935 cycles
System (JASC): 3040 · Windshield/Door Rain/Ice Removal
Part: Control Unit
Condition: Cracked
Location: Windshield Heat
Stage of operation: DE
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

CAPTAIN REPORTED THAT DURING DESCENT, THE RIGHT WINDSHIELD HEAT PROTECTION UNIT WAS CRASHING; MAINTENANCE PERSONNEL PERFORMED INSPECTION FOUND WINDSHIELD HEAT PROTECTION UNIT CRACKED; AIRCRAFT WAS SENT TO THE HANGAR AND MAINTENANCE PERSONNEL REPLACED THE RH WINDSHIELD HEAT PROTECTION UNIT P/N: 7002576H02 S/N: AAFU000372 IAW AMM DMC-B787-A-30-41-03-00A-520A/720A-A, IT WAS PERFORMED OPERATIONAL TEST IAW AMM DMC-B787-A-30-41-00-00A-320A-A, ALL CORRECT.

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