SDR EE4Y2017042403340

Service difficulty report · Skin · Boeing 737400

Difficulty date: April 20, 2017
Submitted: April 24, 2017
Operation: Air carrier
Filed by: EE4Y151M
Cooperativa Autogestionaria de Servicios Aeroindus
Aircraft: N499SA
Make and model: Boeing 737400
Aircraft serial: 26316
Aircraft time: 54,473 hours, 33,638 cycles
System (JASC): 5730 · Wing, Plate/Skin
Part: Skin
Condition: Corroded
Location: Rt Wing
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

DURING THE INSPECTION PROCESS, IT WAS FOUND AT THE RT WING INBD LEADING EDGE CAVITY, SIGNS OF CORROSION BETWEEN FRONT SPAR FWD LOWER CHORD FLANGE AND WING LOWER SKIN UPPER SURFACE AT WBL 156, JOB IS CARRIED OUT FOLLOWING REPAIR INSTRUCTIONS STATED ON ENG. ORDER COO-EO-2017-3016-R01, UNDER BOEING INSTRUCTIONS PROVIDED WITHIN THE S/R # 3-3798329375 AND APPROVED BY FAA 8100-9 FORM PROVIDED BY BOEING.

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