Service difficulty report · Support · Boeing 7377H4

Difficulty date
July 8, 2020
Submitted
August 10, 2020
Operation
Air carrier
Aircraft
N717SA
Make and model
Boeing 7377H4
Aircraft serial
27851
Aircraft time
75,121 hours, 44,711 cycles
Part
Support
Part number
143A7505
Condition
Corroded
Location
Bs 500-500c
Stage of operation
IN
How discovered
9
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 ON FLOOR TO SIDEWALL SUPPORT AT FCB BS500 - BS500C LBL23 WL157. MARKED / REMOVED FLOOR TO SIDEWALL SUPPORT AT FCB BS400-500D LBL23 RECEIVED NEW SIDEWALL SUPPORT LOCATED; DRILLED; COUNTERSUNK SIDEWALL SUPPORT INSTALLED NEW FCB SIDEWALL SUPPORT BS400-500D LBL23 IAW SRM 51-40-02; SRM 51-40-08; SRM 51-40-05; DWG# 143A7500; DWG# 143A7505 DWG# 143A7902 CORROSION ON FCB FLOOR TO SIDEWALL SUPPORT AT BS400-500D LBL27 WAS FOUND OUT OF LIMITS DUE TO PROXIMITY TO HOLES IAW SRM 53-00-53-1A-2 FIG 103(D) 7191U 20JUL20

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