Service difficulty report · Bear Strap · Boeing 7377H4

Difficulty date
August 2, 2021
Submitted
September 20, 2021
Operation
Air carrier
Aircraft
N410WN
Make and model
Boeing 7377H4
Aircraft serial
27897
Aircraft time
66,797 hours, 39,221 cycles
Part
Bear Strap
Condition
Cracked
Location
Bs 294 S8-9r
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 INDICATION FOUND AROUND FASTENER LOCATED BEAR STRAP AT LEVEL FITTING-LATCH; STA 294.5 BETWEEN S-8R AND S-9R. ; 2021-356641 / [01] TOOL USED: P/N: NORTEC 600 D; S/N: 210138103; DUE DATE: 05-MAR-22.; [02] TOOL USED: P/N: NORTEC 600D; S/N: 200048001; DUE DATE: 24-FEB-22; [03] TOOL USED: CALIPER P/N DIGITAL 150; S/N AE-412602; DUE DATE 31-MAY-22.; [04] TOOL USED PN: NORTEC500D; SN: N500X12101U102020; DUE DATE: 01 JUN 22.; [05] TOOL USED: CALIPER P/N 500-197-20; S/N 12141486; DUE DATE 31-JAN-22; [06] TOOL USED EDDY CURRENT INSTRUMENT P/N NORTEC500D S/N N500X11290U021704 DUE DATE: 08-OCT-21.; [07] TOOLS USED: CALIPER P/N500-197-20; S/N 12141486; DUE DATE 31-JAN-22; RADIUS GAUGE P/N 2A04A3; S/N AE-408651; DUE DATE 02-FEB-22.; [08] TOOLS USED: CALIPER P/N 500-197-20; S/N 12141486; DUE DATE 31-JAN-22; RADIUS GAUGE P/N 2204A3; S/N AE-408651; DUE DATE 02-FEB-22.; [09] TOOL USED: MICROMETER P/N 293-831-30 S/N 71150743 DUE DATE 31 AUG 21.; [10] SUMMARY EA 21-153-02338 HAS BEEN APPROVED; ACTIVATED; AND ADDED AS A SUBTASK TO FAULT TTG8Q0060HX6.; [11] PERFORMED PERMANENT REPAIR BEAR STRAP LOCATED BTW BSTA 277 TO BSTA 312 AND STR-6R TO STR-10R IAW B737-700 SRM 53-10-01-2R-6 REPAIR 6; EA 21-153-02338-WIP1 ;EA 21-153-02338-WIP2 AND EA 21-153-02338.; [12] COMPLETED TASK CARD WITH STEP 11 RII

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