Service difficulty report · Support Angle · Boeing 7377H4

Difficulty date
July 26, 2021
Submitted
September 14, 2021
Operation
Air carrier
Aircraft
N446WN
Make and model
Boeing 7377H4
Aircraft serial
29842
Aircraft time
58,476 hours, 34,391 cycles
Part
Support Angle
Condition
Cracked
Location
Lt Wing Te
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 TRAILING EDGE SUPPORT ANGLE LOCATED REAR SPAR ORSS 267 AT LT WING (1 EA) ; 2021-342001 / [01] REMOVED TRAILING EDGE SUPPORT ANGLE AND SEAL RETAINER LOCATED REAR SPAR ORSS 267 AT LT WING IAW B737-700 SRM 51-40-02 AND PERFORMED VISUAL INSPECTION ON ADJACENT AREA AND NOT FOUND ADDITIONAL DAMAGE; [02] STEP 1 COMPLETE; [03] PERFORMED DRILL AT TRAILING EDGE SUPPORT ANGLE IAW B737-700 SRM 51-40-05; [04] APPLIED PROTECTIVE TREATMENT ON NEW HOLES AT TRAILING EDGE SUPPORT ANGLE IAW B737-700 SRM 51-20-01; [05] OBTAINED OK TO INSTALL SEAL RETAINER ON TRAILING EDGE SUPPORT ANGLE; [06] STEP 3;4;5 COMPLETED; [07] INSTALLED SEAL RETAINER ON TRAILING EDGE SUPPORT ANGLE IAW B737-700 SRM 51-40-02; [08] OBTAINED OK TO INSTALL TRAILING EDGE SUPPORT ANGLE; [09] STEP 7 Y 8 COMPLETED; [10] INSTALLED TRAILING EDGE SUPPORT ANGLE IAW B737-700 SRM 51-40-02; [11] REPLACED TRAILING EDGE SUPPORT ANGLE LOCATED AT REAR SPAR ORSS 267 AT LT WING IAW B737-700 SRM 51-10-02 AND 51-40-02; [12] STEP 10 AND 11 COMPLETE

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