Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
September 8, 2022
Submitted
September 30, 2022
Operation
Air carrier
Aircraft
N431WN
Make and model
Boeing 7377H4
Aircraft serial
29845
Aircraft time
66,939 hours, 39,408 cycles
Part
Stiffener
Condition
Cracked
Location
#1 Ib Fan Cowl
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

#1 I/B FAN COWL HAS 1' CRACK IN STIFFENER AT AFT SIDE OF OIL SERVICE DOOR CUTOUT. / [01] REMOVED AND REPLACED STIFFENER AT #1 I/B FAN COWL AT AFT SIDE OF OIL SERVICE DOOR CUTOUT AS PER B737-700 SRM 51-40-02-0G-0.;[02] (AMENDING STEP 1) REMOVED AND REPLACED STIFFENER AT #1 I/B FAN COWL AT AFT SIDE OF OIL SERVICE DOOR CUTOUT AS PER B737-700 SRM 51-40-02-0G-0. PO #1744424.;[03] VERIFIED AND INSPECTED STEP#2.

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