Service difficulty report · Angle · Boeing 7378H4

Difficulty date
March 27, 2023
Submitted
April 25, 2023
Operation
Air carrier
Aircraft
N8529Z
Make and model
Boeing 7378H4
Aircraft serial
36974
Aircraft time
19,994 hours, 9,669 cycles
Part
Angle
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

CORROSION ON 'Z' ANGLE STA 992 2 EA AREAS ; LBL 37; LBL 43; WL 208 UPPER SURFACE.<[01] UPDATED MEASUREMENTS. UPON FURTHER INVESTIGATION; THERE'S NO ALLOWABLE DAMAGE AND PART WILL BE REPLACE IAW SRM 51-10-02 STEP 9. REMOVED Z ANGLE AT STA 992.2 LBL37; LBL43; AND WL208 IAW SRM 51-40-02.;[02] VERIFIED CORRECTIVE ACTION 1 AND MEASUREMENT TABLE.;[03] LOCATED AND DRILLED NEW Z ANGLE FOR BS 992 LBL 37 TO LBL 43 WL 208 IAW SRM 51-40-05-0G-0 OK TO INSTALL.;[04] VERIFIED CORRECTIVE ACTION 3 WITH OK TO INSTALL GIVEN;[05] INSTALLED Z ANGLE AT BS 992 LBL 37 TO LBL 43 WL 208 IAW SRM 51-40-02-0G-0 AND BOEING DWG 147A5700 APPLIED FILLET SEAL IAW AMM 51-31-00-390-804;[06] VERIFIED CORRECTIVE ACTION 5

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