Service difficulty report · Support · Boeing 7377H4

Difficulty date
August 16, 2021
Submitted
April 27, 2022
Operation
Air carrier
Aircraft
N415WN
Make and model
Boeing 7377H4
Aircraft serial
29836
Aircraft time
66,271 hours, 39,040 cycles
Part
Support
Condition
Cracked
Location
Lh Eng
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 INBOARD FAN COWL SUPPORT WEB ON ENGINE 1 ; 2021-369345 / [01] REMOVED INBOARD FAN COWL SUPPORT WEB ON ENGINE 1 IAW SRM B737-700 51-40-02 DUE TO ALLOWABLE DAMAGE NOT FOUND ON SRM AND MUST BE REPLACED AND PERFORMED VISUAL INSPECTION ON ADJACENT AREA AND NOT FOUND MORE DAMAGE MEASURED OF CRACK IS L=1.13 TOOL USED P/N:DOGITAL 150 S/N:AE-412601 DUE DATE 31MAY22; [02] CORRECTED STEP 1.REPLACED INBOARD FAN COWL SUPPORT WEB ON ENGINE 1 IAW SRM B737-700 51-40 02 AND 51-10-02 DUE TO ALLOWABLE DAMAGE NOT FOUND ON SRM AND MUST BE REPLACED MEASURED CRACK IS L=1.130 TOOL USED CALIPER P/N:DIGITAL 150 S/N:AE-412601 DUE DATE:31MAY22; [03] VERIFIED TASK COMPLETE

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