Service difficulty report · Stub Frame · Boeing 7377H4

Difficulty date
August 1, 2021
Submitted
September 15, 2021
Operation
Air carrier
Aircraft
N446WN
Make and model
Boeing 7377H4
Aircraft serial
29842
Aircraft time
58,476 hours, 34,391 cycles
Part
Stub Frame
Condition
Cracked
Location
Bs 291
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

CRACK ON STUB FRAME LOCATED ON BS291.5 BETWEEN STR 8R AND STR 9R AT FWD SERVICE R1 DOOR ; 2021-342254 / [01] TOOK MEASURE OF CRACK LOCATED ON STUB FRAME LOCATED ON BS291 BETWEEN STR 8R TO 9R AT FWD MEASURE IS: L= 0.200 INCH; TOOL USED CALIPER P/N:500-752-20 S/N:B16101265; DUE DATE: 20APR22 AND EVALUATED AND NOT FOUND ALLOWABLE DAMAGE ON B737-700 SRM AND MUST BE REPLACE.; [02] REMOVED STUB FRAME LOCATED ON BS 296.40 AND STR 7R TO 10R IAW B737-700 SRM 51-40-02 AND PERFORMED VISUAL INSPECTION ON AREA AND NOT FOUND MORE DAMAGE.; [03] DRILLED NEW HOLES ON STUB FRAME LOCATED ON BS291.5 BETWEEN STR 8R AND STR 9R AT FWD SERVICE R1 DOOR IAW B737-700 SRM 51-40-05; [18] REPLACED STUB FRAME LOCATED ON BS291.5 BETWEEN STR 7R AND STR 9R AT FWD SERVICE R1 DOOR IAW B737-700 SRM 51-40-02 SRM 51-10-02 ITEM 9 AND DWG 141A8370 REV_

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