SDR CKSA98045

Service difficulty report · Skin · Boeing 747146

Difficulty date: February 24, 1998
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N703CK
Make and model: Boeing 747146
Aircraft serial: 19727
System (JASC): 5330 · Fuselage Main, Plate/Skin
Part: Skin
Condition: Corroded
Location: Bs 1850
Stage of operation: IN
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 CPCP INSPECTION FOUND LEVEL 2 CORROSION. CORROSION ON INTERNAL SKIN AT UPPER FWD CORNER OF C-2 DOOR CUTOUT BS 1850. REMOVED CORROSION IAW B747 SRM 51-10-1. PERFORMED ULTRASONIC THICKNESS CHECK, MINIMUM NOMINAL THICKNESS .135. CORROSION FOUND TO BE OUT OF LIMITS IAW B747 SRM 53-30-01. INSTALLED REPAIR PARTS PER B747 SRM 51-30-02 AND AIA/E/2735. CORROSION TASK CARD NUMBER C53-110-01 PART 3 OF 5. NON-ROUTINE TASK CARD NUMBER 12735.