SDR CKSA98079

Service difficulty report · Floorbeam · 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): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Condition: Corroded
Location: Bs 1660
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 FLOORBEAM UPPER CHORD AT STA 1660 LBL 15. REMOVED CORROSION ON FLOORBEAM UPPER CHORD AT BS 1660 LBL 15 IAW B747 SRM 51-10-01. FOUND OUT OF LIMITS IAW B747 SRM 53-10-01. CUT OUT DAMAGED AREA IAW B747 SRM 53-10-07 FIG 9. INSTALLED REPAIR SPLICES IAW SRM 53-10-07 FIG 9. CORROSION TASK CARD NUMBER C53-210-01. NON-ROUTINE TASK CARD NUMBER 14755.