Service difficulty report · Threshold · Boeing 7374B7

Difficulty date
April 11, 2012
Submitted
April 30, 2012
Operation
Air carrier
Aircraft
N427US
Make and model
Boeing 7374B7
Aircraft serial
24549
Aircraft time
61,145 hours, 40,839 cycles
Part
Threshold
Part number
6547957U3
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 - CORROSION ON THRESHOLD WEB BETWEEN BS 794 TO BS 847, S25R & BETWEEN RBL 19 TO RBL 29. REPLACED THRESHOLD WEB BETWEEN BS 794 TO BS 847, S25R & BETWEEN RBL 19 TO RBL 29 IAW B737 SRM 51-40-02-0G, FIG 9 & 10.

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