Service difficulty report · Web · Boeing 7377H4

Difficulty date
July 28, 2021
Submitted
September 15, 2021
Operation
Air carrier
Aircraft
N447WN
Make and model
Boeing 7377H4
Aircraft serial
33720
Aircraft time
58,733 hours, 34,620 cycles
Part
Web
Condition
Corroded
Location
Bs 1016-1029
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

CORROSION ON 1016 WEB AT AFT WET AREA BS 1029 BL 0 WL 208 ; / [01] REMOVED AND EVALUATED CORROSION REMOVAL AT DISCREPANCY AREA L= 0.4' W=0.2'. NO ALLOWABLE DAMAGE FOUND ON SRM. PART TO BE REPAIR BY REPLACEMENT PER SRM 51-10-02; [03] REMOVED DAMAGE AREA L= 0.4' W=0.2' PER SRM 51-10-02 AND PERFORMED VISUAL INSPECTION WITH A 10-POWER MAGNIFYING GLASS TO MAKE SURE ALL OF THE CORROSION WAS REMOVED AND TO FIND POSSIBLE CRACKS TO SUBMIT TO ENGINEERING FOR REPAIR DISPOSITION.; [[14] COMPLETED REPAIR PER EA 21-153-02318; [15] UPDATED MEASUREMENTS; [16] REPAIRED PER EA 21-153-02318

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