Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
August 26, 2022
Submitted
September 26, 2022
Operation
Air carrier
Aircraft
N496WN
Make and model
Boeing 7377H4
Aircraft serial
32478
Aircraft time
59,797 hours, 35,569 cycles
Part
Stiffener
Condition
Cracked
Location
Fuselage
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

FOUND CABIN AREA STIFFENER AT LBL 20 BETWEEN STA 380 AND STA 400 SHOWS MULTIPLE CRACKS AROUND FASTENER HOLES / [01] REMOVED STIFFENER BETWEEN STA. 380 TO STA. 400 LBL. 20'AT MAIN CABIN. REF. SRM. 51-40-02-0G-0-A00729.;[02] VERIFIED REMOVAL OF STIFFENER BETWEEN STA. 380 TO STA. 400 LBL. 20'AT MAIN CABIN.;[03] RECEIVED NEW ANGLE PN #143A5410-170; PO#. 1784756; LOCATED AND DRILLED HOLES AT MAIN CABIN. REF. SRM.51-40-0G-0;[04] CORRECTION TO STEP 3: RECEIVED NEW ANGLE PN #143A5410-170; PO#. 1784756; LOCATED AND DRILLED HOLES AT MAIN CABIN STA 380 TO 400 LBL 20 REF. SRM.51-40-0G-0;[05] VERIFIED STEP 4 RECEIVED; LOCATED AND DRILLED HOLES AT MAIN CABIN STA 380 TO 400 LBL;[06] OK TO REPLACE STIFFENER AT LBL 20 BETWEEN STA 380 AND STA 400;[07] REPLACED STIFFENER AT MAIN CABIN LBL. 20' BETWEEN STA. 380 TO STA. 400. REF. SEM 51-40-02-0G-0.;[08] VERIFIED STEP 7 REPLACED STIFFENER AT MAIN CABIN LBL. 20' BETWEEN STA. 380 TO STA. 400.

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