Service difficulty report · Spar · Doug MD11F

Difficulty date
November 6, 2019
Submitted
February 20, 2020
Operation
Air carrier
Aircraft
N574FE
Make and model
Doug MD11F
Aircraft serial
48499
Aircraft time
87,878 hours, 20,658 cycles
System (JASC)
5711 · Wing Spar
Part
Spar
Part number
ARB74132
Condition
Corroded
Location
Rt Wing
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

PERFORMED DETAIL VISUAL INSP. OF THE OUTER WING, UPPER SPAR CAP (P/N ARB7413-2) FROM STATIONS XORS-1041.500 THROUGH XORS-1044.000 PER FOLLOW UP E.A. 1-5720-87643 AND W/C SEQ. #000806, W/C #T-1-5720-87643 P2. FOUND CORROSION BETWEEN AREAS X0RS- 1035.500 THROUGH X0RS-1044.000. 5121818: CONSIGNADO, FREDERICK J - 12-FEB-2020 18:10 REF E.A 1-5710-T0351904 " WINGS - BASIC WING STRUCTURE - RH WING REAR SPAR UPPER GAP AFT LEG - REWORK" REMOVED CORROSION AND REPAIRED TOP WING SPAR PER EA T1-5710-Y0351904. WORKED ACCOMPLISHED ON N/R 1206 & N/R 507 "MAJOR REPAIR" AMT# EA 5082867, RII: QC# 5156615, 02/11/20 JPF ITEM 1: EMP: NMS 911637, RII: RII, OPEN WORK ITEM; CORROSION IN INDICATED AREA RE REQUIRES BLEEDING CORRECTIVE ACTION: BLENDED CORROSION IAW SRM 57-00-00-2R., MECH: NMS 911637, INSP: QC# 97952, 11/06/20 ITEM 2: EMP: NMS 911637, RII: RII, OPEN WORK ITEM: REQUEST NDT CHECK BLENDED AREA FO FOR REMAINING MATERIAL THICKNESS CORRECTIVE ACTION: PERFORMED UT THICKNESS MEASUREMENT PER NDTSPM TP-MDC- 93K0393 MINIMUM THICKNESS MEASURED IS .035 INCH MAXIMUM THICKNESS MEASURED I IS .115 INCH. MECH: N/A QC 97952, INSP; QC# 97952, 11/07/19

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