Service difficulty report · Rib · Boeing 7377H4

Difficulty date
July 28, 2021
Submitted
September 7, 2021
Operation
Air carrier
Aircraft
N442WN
Make and model
Boeing 7377H4
Aircraft serial
32459
Aircraft time
60,608 hours, 35,906 cycles
Part
Rib
Condition
Cracked
Location
Rt 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 ANGLE TRAILING EDGE AT LEVEL ORSS 275 DEFLECTOR CONTROL RIB RT WING ; 2021-341160 / [01] REMOVED ANGLE LOCATED TRAILING EDGEAT LEVEL ORSS 275 DEFLECTOR CONTROL RIB RT WING IAW B737-700 SRM51-40-02 DUE TO NOT FOUND ALLOWABLE DAMAGE LIMITS IN SRM B737-700. ANGLE MUST BE REPLACED AND PERFORMED VISUAL INSPECTION AND NOT FOUND MORE DAMAGE. THE MEASURES OF CRACK IS: 0.312 TOOL USED: CALIPER P/N: DIGITAL 150 S/N:AE-412610 DUE DATE: 21/MAY/22; [02] STEP 1 VERIFIED; [03] DRILLED NEW HOLE ON ANGLE LOCATED TRAILING EDGE AT LEVEL ORSS 275 DEFLECTOR CONTROL RIB RT WING IAW B737-700 SRM 51-40-05 AND APPLIED PROTECTIVE TREATMENTS ON NEW ANGLE SRM 51-20-01; [04] OK TO INSTALL NEW ANGLE AND FASTENERS LOCATED TRAILING EDGE AT LEVEL ORSS 275 DEFLECTOR CONTROL RIB RT WING; [05] STEP 3 AND 4 COMPLETED; [06] INSTALLED NEW ANGLE AND FASTENERS LOCATED TRAILING EDGE AT LEVEL ORSS 275 DEFLECTOR CONTROL RIB RT WING IAW B737-700 SRM 51-40-02; [07] REPLACED ANGLE LOCATED TRAILING EDGE AT LEVEL ORSS 275 DEFLECTOR CONTROL RIB RT WING IAW B737-700 SRM 51-10-02-0G-0 ITEM 9; [08] STEP 6;7 COMPLETED; [09] TASK COMPLETED

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