SDR USAA2012050300008

Service difficulty report · Sill · Boeing 7374B7

Difficulty date: April 7, 2012
Submitted: May 3, 2012
Operation: Air carrier
Aircraft: N427US
Make and model: Boeing 7374B7
Aircraft serial: 24549
Aircraft time: 61,145 hours, 40,839 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Sill
Part number: 6545875U70
Condition: Corroded
Location: Fuselage
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

Q1 CHECK - EXFOLIATION CORROSION ON INNER SILL CHORD AT FORWARD GALLEY DOOR BETWEEN BS 294.2 TO BS 360, WL 207.5, RBL 58. REPLACED FORWARD GALLEY DOOR INNER SILL CHORD BETWEEN BS 294.2 TO BS 360, WL 207.5, RBL 58 IAW B737 SRM 51-40-02-0G, FIG 6, 8 AND 12.

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