Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
October 24, 2023
Submitted
November 21, 2023
Operation
Air carrier
Aircraft
N914WN
Make and model
Boeing 7377H4
Aircraft serial
36622
Aircraft time
51,132 hours, 31,028 cycles
Part
Stiffener
Part number
UNKNOWN
Condition
Cracked
Location
Zn 300 Stabilize
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

LEFT HORIZONTAL STAB RIB # 6 AFT STIFFENER WAS FOUND CRACKED AFTER RIB REMOVAL<[01] REMOVED AND INSTALLED NEW STIFFENER AT LEFT HORIZONTAL STAB RIB # 6 REF 51-40-02-0G-0; DWG 182A1505 AND EA23-155-03219 (WIP 1).;[02] RII; VERIFIED STEP # 1;[03] REMOVED AND INSTALLED NEW STIFFENER AT LEFT HORIZONTAL STAB RIB # 6 REF 51-40-02-0G-0; DWG 182A1505 AND EA23-155-03219 (WIP 1).;[04] RII; VERIFIED REPLACEMENT OF AFT STIFFENER AT HORIZONTAL STAB. RIB # 6;[05] VERIFIED WORKMANSHIP WAS DONE AS PER APPROVED REFERENCES.;[06] EA EA-COMPONENT (EA ATTACHED TO A FAULT FOR A TRACKED COMPONENT) SELECTED AS REPAIR REFERENCE. SEE TASK CARD # TTG8Q00PMEXV;[07] VERIFIED STEP 6;[08] ADDED DE LABOR ROW ONLY TO CLEAR 'IN WORK' STATUS OF COMPLETED FAULT.

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