Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
July 31, 2023
Submitted
August 23, 2023
Operation
Air carrier
Aircraft
N902WN
Make and model
Boeing 7377H4
Aircraft serial
36615
Aircraft time
51,130 hours, 29,802 cycles
Part
Stiffener
Part number
UNKNOWN
Condition
Cracked
Location
Zn 100 Fus Lower
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 FOUND AT VERTICAL STIFFENER FASTENER HOLE AT R/H VAPOR BARRIER RBL 54.10 AT UPPER SUPPORT ANGLE JUNCTION. HOLE SIZE : 0.216' CRACK FOUND AT VERTICAL STIFFENER FASTENER HOLE AT R/H VAPOR BARRIER RBL 54.21 AT UPPER SUPPORT ANGLE JUNCTION. HOLE SIZE : 0.216'<[01] ACCOMPLISHED REPAIR OF VERTICAL STIFFENER HOLE AT RT VAPOR BARRIER RBL 54.21 AS PER EA 23-153-02411 INSTRUCTIONS.;[02] CERTIFIED WORK STEPS ACCOMPLISHED TO REPAIR A STIFFENER HOLE AT RH VAPOR BARRIER STA 663 RBL 54.10

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