SDR UIEA2021050701101

Service difficulty report · Keelbeam · Boeing 747400

Difficulty date: May 4, 2021
Submitted: May 7, 2021
Operation: Air carrier
Aircraft: N405KZ
Make and model: Boeing 747400
Aircraft serial: 36132
Aircraft time: 46,529 hours, 9,331 cycles
System (JASC): 5314 · Fuselage Main, Keel
Part: Keelbeam
Condition: Corroded
Location: Bs 1387
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 - CHORD, KEEL BEAM ASSEMBLY, INTERIOR STRUCTURE STA 1387, RBL 9(BLENDED OUT THE DAMAGE AREA IAW SRM 51-10-02 REV 91. PERFORMED NDT INSP. REFER TO J/C ATTACHING SHEET NO. 0291705 AND DATA SHEET NO. 5767371-1. ACCOMPLISHED EI NO. T202153M. CONDITION CHECK NORMAL. )

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