Service difficulty report · Angle · Boeing 7378H4

Difficulty date
November 4, 2023
Submitted
December 7, 2023
Operation
Air carrier
Aircraft
N8556Z
Make and model
Boeing 7378H4
Aircraft serial
63583
Aircraft time
19,574 hours, 9,791 cycles
Part
Angle
Part number
UNKNOWN
Condition
Corroded
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

AFT CARGO R/H TRANSITION ANGLE HAS CORROSION ON UPPER SURFACE STA 767 TO 787 RBL 22. MRKD<[01] AFT CARGO COMPARTMENT RT SIDEPLATE SHIELD ASSEMBLY DAMAGE BETWEEN STA 767 TO STA 792; RBL 21; WL 155 WAS FOUND TO BE OUT OF ALLOWABLE LIMITS IAW SRM 53-00-53-1A-2.;[02] REMOVED RT SIDEPLATE SHIELD ASSEMBLY BETWEEN STA 767 TO STA 792; RBL 21; WL 155. LOCATED ;DRILLED ;TREATED AND PRIME SHIELD ASSEMBLY IAW SRM 53-00-53-2R-5; SRM 51-40-05; SRM 51-40-02.;[03] INSTALLED AFT CARGO COMPARTMENT RT SERVICEABLE SHIELD ASSEMBLY BETWEEN STA 767 TO STA 792; RBL 21; WL 155 IAW SRM 53-00-53-2R-5; SRM 51-40-02.;[04] REJECT: SHIELD ASSEMBLY REPLACED ON THIS FAULT IS CONSIDERED DOOR SURROUND STRUCTURE PER SRM 53-60-15-0I-1 AND IS IDENTIFIED AS PRIMARY-PSE PER SRM 51-00-04-0G-0. INCORRECT REFERENCE USED FOR REPLACEMENT; AND CARD NOT IDENTIFIED AS RII PER MPM 10.03.04; USING MEASUREMENT ITEM #1. MEASUREMENT ITEM #3 SHOULD BE YES AS FAILURE TYPE FOR FAULT IS 03CP.;[05] CORRECTIVE ACTION 3. WAS ENTERED IN ERROR. SHIELD ASSEMBLY WAS REPLACED PER SRM 53-60-15-0I-1 AND IS IDENTIFIED AS PRIMARY-PSE PER SRM 51-00-04-0G-0. CORRECTED CARD AND IDENTIFIED AS RII PER MPM 10.03.04.

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