Service difficulty report · Keel Fitting · Boeing 7572Q8

Difficulty date
July 6, 2015
Submitted
July 8, 2015
Operation
Air carrier
Aircraft
N823DX
Make and model
Boeing 7572Q8
Aircraft serial
33967
Aircraft time
25,839 hours, 15,429 cycles
Part
Keel Fitting
Condition
Corroded
Location
Bs 1075-1100
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 ON LOWER KEEL STRUCTURE COMMON TO LT MLG DOOR HINGE T-CHORD AT BS 1075 TO BS 1100, LBL 6. REMOVED CORROSION ON LOWER KEEL STRUCTURE COMMON TO LT MLG DOOR HINGE T-CHORD AT BS 1075 TO BS 1100 LBL6. GREATEST MATERIAL LOSS MEASURE 2.4" X 1.4" X .065" ORIGINAL MATERIAL .125". BLENDED AREA FOUND TO BE OUT OF LIMITS IAW SRM 53-00-71, PG. 109, AD I, DETAIL VII. REMOVED, FABRICATED REPLACEMENT T-CHORD & INSTALLED IAW SRM 51-40-02, PG 10, SRM 53-40-71, PG 6-7, FIG 1 & DWG AND 10136-3005. RESTORED ACCESS.

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