SDR NACA2025040800005

Service difficulty report · Skin · Boeing 737301

Difficulty date: April 8, 2025
Submitted: June 27, 2025
Operation: Air carrier
Aircraft: N360WA
Make and model: Boeing 737301
Aircraft serial: 23553
Aircraft time: 65,384 hours, 55,630 cycles
System (JASC): 5730 · Wing, Plate/Skin
Part: Skin
Condition: Corroded
Location: Zone 500
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

CORROSION WAS FOUND AT LT WING UPPER SKIN UPPER SURFACE BETWEEN WS.364 AND WS.367 , LEADING EDGE SKIN AREA. WS.371 AND WS.374 , LEADING EDGE SKIN AREA. WS.422 AND WS.424 , LEADING EDGE SKIN AREA. WS.428 AND WS.430 , LEADING EDGE SKIN AREA. WS 456 AND WS.463 , LEADING EDGE SKIN AREA . WS.472.5 AND WS.490.5 , LEADING EDGE SKIN AREA. REMOVED CORROSION LEVEL 2 AT LH WING UPPER SKIN SURFACE REMAINING THICKNESS IS WITHIN LIMITS. AREA CLEAN AND PROTECIVE. PER: EO 737-57-0051 PME NO: 004693.