Service difficulty report · Angle · Boeing 7378H4

Difficulty date
October 4, 2023
Submitted
November 3, 2023
Operation
Air carrier
Aircraft
N8552Z
Make and model
Boeing 7378H4
Aircraft serial
63580
Aircraft time
19,555 hours, 9,780 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 ; RH TRANS. ANGLE HAS CORROSION AT FASTENER HOLES FROM BS 727H-727I.<[01] R/H TRANSITION ANGLE AT STA.727H +19 IS OUT OF ALLOWABLE LIMITS PER SRM 53-00-53-1A-2.;[02] R/H TRANSITION ANGLE REPAIR WILL BE FROM STA.727H +10 TO STA.767 PER SRM 53-00-53-2R-5.;[03] CUTOUT DAMAGED SECTION OF R/H TRANSITION ANGLE FROM STA.727H +10 TO STA.767 PER SRM 53-00-53-2R-5.;[04] FABRICATED REPAIR PARTS PER SRM 53-00-53-2R-5.;[05] OK TO INSTALL REPAIR PARTS.;[06] VERIFIED PARTS FABRICATION. PARTS OK TO INSTALL;[07] INSTALLED REPAIR PARTS R/H TRANSITION ANGLE STA 727H+10 TO 767 PER SRM 53-00-53-2R-5.;[08] RII: VERIFIED INSTALLATION OF REPAIR PARTS AS NOTED IN CORRECTIVE ACTION #7 AT 15-OCT-2023 20:23 UTC.;[09] INSTALLED BONDED NUT PLATES COMMON TO THE REPAIR PARTS PER SRM 51-40-10-2R-0 AND EA M-23-151-01545.;[10] RII VERIFIED INSTALLATION OF BONDED NUT PLATES AS NOTED ON CORRECTIVE ACTION #9 AT 16-OCT-2023 00:17 UTC. <BR>24 HOUR CURE TIME FROM INSTALLATION TIME AS NOTED IN CORRECTIVE ACTION #9; REFERENCING EA M-23-151-01545 AND SRM 51-30-10-0G-0 FIGURE 2A.;[11] SEE INDIVIDUAL SIGNOFFS

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