Service difficulty report · Attach Angle · Boeing 7378H4

Difficulty date
November 25, 2024
Submitted
December 20, 2024
Operation
Air carrier
Aircraft
N8657B
Make and model
Boeing 7378H4
Aircraft serial
42535
Aircraft time
33,347 hours, 16,219 cycles
Part
Attach Angle
Condition
Cracked
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

R/H ECS BAY AFT AREA; ANGLE ATTACHED TO THE LOWER REAR SPAR CRACKED AT BS 663 APPROX. RBL-40<[01] REMOVED RH VAPOR BARRIER ATTACHMENT ANGLE; VAPOR BARRIER CHANNEL SUPPORT FROM STA RBL45 TO RBL 65; STIFFENER AT STA RBL33 APPOX; AND FITTING AT RBL 70; FORMED RH VAPOR BARRIER ATTACHMENT ANGLE; INSTALLED NEW RH VAPOR BARRIER ATTACHMENT ANGLE; VAPOR BARRIER CHANNEL SUPPORT FROM STA RBL45 TO RBL 65; STIFFENER AT STA RBL33 APPROX; AND FITTING AT RBL 70; REF BAC DWG 111A1000 REV - AND B737-NG SRM 51-40-02;[02] REMOVED RH VAPOR BARRIER ATTACHMENT ANGLE; VAPOR BARRIER CHANNEL SUPPORT FROM STA RBL45 TO RBL 65; STIFFENER AT STA RBL33 APPOX; AND FITTING AT RBL 70; FORMED RH VAPOR BARRIER ATTACHMENT ANGLE; INSTALLED NEW RH VAPOR BARRIER ATTACHMENT ANGLE; VAPOR BARRIER CHANNEL SUPPORT FROM STA RBL45 TO RBL 65; STIFFENER AT STA RBL33 APPROX; AND FITTING AT RBL 70; REF BAC DWG 111A1000 REV - AND B737-NG SRM 51-40-02

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