Service difficulty report · Crease Beam · Boeing 7378H4

Difficulty date
June 1, 2024
Submitted
July 1, 2024
Operation
Air carrier
Aircraft
N8696E
Make and model
Boeing 7378H4
Aircraft serial
36678
Aircraft time
26,266 hours, 12,981 cycles
Part
Crease Beam
Part number
UNKNOWN
Condition
Corroded
Location
Bs 945-952
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

AFT CABIN R/H I/B CREASEBEAM UPPER SURFACE CORROSION AT STA 945-952 RBL 53-56 WL 208. MRKD<[01] BLENDED CORROSION ON CREASE BEAM(INNER CHORD) FROM STA. 945 TO STA. 952 AT RBL 54? PER SRM 51-10-02. REMOVED .043? OF MATERIAL. REMAINING THICKNESS IS .037?. DAMAGE REMOVAL IS OUT OF LIMITS PER SRM 53-70-15-1A-1. REMOVED INNER CHORD FROM STA. 887+7? TO STA. 1006; RBL 54 PER SRM 51-40-02 FOR PART REPLACEMENT.;[02] VERIFIED WORK IN C/A #1 BLENDED CORROSION ON CREASE BEAM (INNER CHORD) FROM STA. 945 TO STA. 952 AT RBL 54? PER SRM 51-10-02. REMOVED .043? OF MATERIAL. REMAINING THICKNESS IS .037?. DAMAGE REMOVAL IS OUT OF LIMITS PER SRM 53-70-15-1A-1. REMOVED INNER CHORD FROM STA. 887+7? TO STA. 1006; RBL 54 PER SRM 51-40-02 FOR PART REPLACEMENT;[03] REMOVED AND REPLACED INNER CHORD (P/N 147A8540U8) FROM STA. 887+7? TO STA. 1006; RBL 54' PER SRM 51-40-02.;[04] INSPECTED WORK IN C/A #3 REMOVED AND REPLACED INNER CHORD (P/N 147A8540U8) FROM STA. 887+7? TO STA. 1006; RBL 54' PER SRM 51-40-02 (RII);[05] R/R R/H CREASE BEAM INNER CHORD (Z-ANGLE) IAW SRM 51-40-02.;[06] C/W INSPECTION. REMOVED AND REPLACED PER [SRM 51-40-02-0G-0-B00069 (GENERAL - FASTENER INSTALLATION AND REMOVAL - AIRFRAME - PERMANENT)]

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