Service difficulty report · Plate · Boeing 7378H4

Difficulty date
May 3, 2023
Submitted
May 25, 2023
Operation
Air carrier
Aircraft
N8670A
Make and model
Boeing 7378H4
Aircraft serial
36656
Aircraft time
27,016 hours, 12,741 cycles
Part
Plate
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

FWD CARGO R/H SIDEPLATE HAS CORROSION AT FASTENER HOLES RBL 24; STA. 500G-500H<[01] REMOVED DAMAGE I.A.W SRM 51-10-02. MEASURED DAMAGE DEPTH TO BE .009?. DAMAGE FOUND TO BE OUT OF LIMITS I.A.W SRM 53-00-53-1A-2.;[02] REMOVED RH TRANSITION ANGLE STA 500B-500H PER SRM 51-40-02;[03] LOCATE AND DRILL REPAIR PARTS FROM STA 500B TO 500I I.A.W. SRM 53-00-53-2R-5;[04] COMPLETED FABRICATION AND DEBURRING OF REPAIR PARTS FROM STA 500B TO 500I IAW SRM 53-00-53-2R-5 AND EA M-22-153-01550 REV A. OK TO TREAT AND PAINT.;[05] ALODINE TREATED REPAIR PARTS PER SRM 51-20-01 AND PRIMED REPAIR PARTS PER AMM 51-21-72. OK TO ATTACH PIECES TOGETHER.;[06] INSPECTED WORK PERFORMED C/A #1;#2;#3;#4;#5.;[07] ATTACHED SPLICE PLATE PER SRM 51-40-02 AND ADHESIVE BOND NUTPLATES PER SRM 51-40-10 AT STA 500B TO 500I AT 1700 8MAY2023.;[08] ENGINEERING TSR REQUIRED TO VERIFY CORRODED ELEMENT PART NUMBER IS EFFECTIVE FOR AIRCRAFT. DATA TO BE ENTERED ON STEP #1;[09] PERFORMED NUT PLATE INSTALL TEST PER SRM 51-40-10;[10] INSTALLED R/H TRANS ANGLE FROM STA 500B-500I PER SRM 51-40-02;[11] INSTALLED EA M-22-153-01550 REV A REPAIR PARTS PER SRM 51-40-02;[12] VERIFIED INSTALLED R/H TRANS ANGLE FROM STA 500B-500I PER SRM 51-40-02

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