Service difficulty report · Support Angle · Boeing 7378H4

Difficulty date
July 10, 2023
Submitted
August 2, 2023
Operation
Air carrier
Aircraft
N8544Z
Make and model
Boeing 7378H4
Aircraft serial
36926
Aircraft time
19,891 hours, 9,804 cycles
Part
Support 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

TRANSITION ANGLE SUPPORT HAS SURFACE CORR. STA 767-787. RBL22<[01] REMOVED CORROSION AFT CARGO TRANSITION SUPPORT ANGLE RBL 22 STA 767F TO STA. 787 ORIGINAL THICKNESS IS 0.050?; MATERIAL LOSS IS 0.006?; MAX ALLOWED IS 0.005?; REMAINING THICKNESS IS 0.046?. FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2<BR><BR>REMOVED OUT OF LIMITED TRANSITION ANGLE SUPPORT. LOCATED AND DRILLED NEW TRANSITION ANLGE SUPPORT. ALL WORK REFERENCE TO SRM 51-40-05.;[02] CW;[03] INSTALLED NEW TRANSITION ANLGE SUPPORT PER SRM 51-40-02.;[04] VERIFIED INSTALLED NEW TRANSITION ANGLE SUPPORT PER SRM 51-40-02.

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