Service difficulty report · Angle · Boeing 7378H4

Difficulty date
April 12, 2022
Submitted
April 27, 2022
Operation
Air carrier
Aircraft
N8684F
Make and model
Boeing 7378H4
Aircraft serial
36653
Aircraft time
20,246 hours, 9,455 cycles
Part
Angle
Part number
146A750252
Condition
Corroded
Location
Aft Cargo Bay
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

A-061 DOT 031 AFT CARGO PIT R/H Z ANGLE FROM STA 727G TO STA 747+15' RBL 23 WL 155 CORROSION ON UPPER SURFACE / [01] REMOVED CORROSION FROM RH ZEE ANGLE STA 727G-747+15 ORIINAL T= .045' LOSS OF .009' REM T= .036' FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2 TOOLING INFO AAR 41392 CAL DUE 08SEP22 WORK PERFORMED BY AUSTIN LANDIS 28323;[02] VERIFIED STEP 1;[03] CUT OUT DAMAGE Z ANGLE SECTION BETWEEN STA 727G TO 727F AND REMOVED IAW SRM 53-00-53-2R-5 REPAIR 5;[04] VERIFIED MATERIAL ID FOR Z ANGLE REPAIR PARTS BAC1496-377-7075 T6 TAG# A119065 IAW SRM 53-00-53-2R-5;[05] VERIFIED STEP 4 IS COMPLETE;[06] VERIFIED ITEMS 3 THROUGH 5;[07] STARTED TO FABRICATE Z ANGLE REPAIR PARTS IAW SRM 53-00-53-2R-5;[08] VERIFIED STEP 7;[09] FINISHED TO FABRICATE Z ANGLE REPAIR PARTS IAW SRM 53-00-53-2R-5 REPAIR 5;[10] VERIFIED STEP 9;[11] VERIFIED STEP 9-10 AND OK TO TREAT AND PRIME;[12] APPLIED ALODINE AND PRIMER TO Z ANGLE REPAIR PARTS IAW SRM 51-20-01-0G-0 AND AMM 51-21-72-370-804;[13] CERTIFIED STEP 12;[14] VERIFIED STEPS 12-13;[15] OK GIVEN TO INSTALL Z ANGLE;[16] INSTALLED Z ANGLE REPAIR PARTS IAW SRM 53-00-53-2R-5 REPAIR 5;[17] VERIFIED STEP 16;[18] VERIFIED ITEM 16;[19] OK TO CIC UPPER AND LOWER SURFACES OF Z ANGLE .;[20] APPLIED CIC TO UPPER AND LOWER SEURFACES IAW AMM 51-21-1;[21] VERIFIED STEP 20;[22] C/W;[23] JOB COMPLETE; AUDIT C/W;[24] CHANGED CORROSION LEVEL

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