Service difficulty report · Girt Bar · Boeing 7377H4

Difficulty date
April 11, 2023
Submitted
May 17, 2023
Operation
Air carrier
Aircraft
N958WN
Make and model
Boeing 7377H4
Aircraft serial
36673
Aircraft time
38,993 hours, 23,664 cycles
Part
Girt Bar
Condition
Corroded
Location
Zn 200 Fus Top
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

FOUND CORROSION ON R/H GIRT BAR FITTING AFT MOUNTING BRACKET FASTENER HOLE BS 986 WL 208 RBL 43<[01] UPDATED MEASUREMENT TABLE;[02] SRM 53-70-51-2R-6 FOUND TO BE APPLICABLER FOR 986 FLOOR BEAM REPAIR;[03] REMOVED DAMAGE ON 986 FLOOR BEAM AT RBL 43 WL208 GIRT BAR FITTING AFT MOUNTING BRACKET FASTENER HOLE PER SRM 53-70-51-2R-6 STEP 4 C-2;[04] REQUEST HFEC ALONG CUT EDGES OF CUT OUT PER SRM 53-70-51-2R-6 STEP 4 C-2;[05] REQUEST HFEC ON OPEN HOLE IN REPAIR AREA SRM 53-70-51-2R-6 STEP 4 D-2;[06] REMOVED DAMAGE AT R/H GIRT BAR FITTING AFT MOUNTING BRACKET FASTENER HOLE BS 986 WL 208 RBL 43 IN A 1'X.9'X.065 AREA FOUND TO BE OUT OF LIMITS PER SRM 53-70-51-2R-6;[07] DAMAGE CUT OUT 1.2'X1' PER SRM 53-70-51-2R-6 ON ITEM 3;[08] COMPLETED MEASUREMENT TABLE;[09] VERIFIED CORRECTION ITEM 6; 7 AND 8; MEASUREMENT TABLE IS CORRECT.;[10] ACCOMPLISHED HFEC SURFACE SCAN IAW 737 NDTM PART 6 CHAPTER 51-00-00 PROCEDURE 23. NO CRACKS NOTED. PERFORMED DETAILED INSPECTION OF ADJACENT STRUCTURE.IN REPAIR AREA NO FURTHER DAMAGE FOUND PER SRM 53-70-51-2R-6 STEP 4 D-3;FLAP PEENED CUT EDGE PER PER SRM 53-70-51-2R-6 STEP 4 2-C AND SOPM 20-10-03;[15] UPDATE CORRECTION ACTION ITEM 3.;[16] APPLIED CHEMICAL CONVERSION COATING AND PRIMED AT CUT OUT ON 986 FLOOR BEAM PER SRM 53-70-51-2R-6;[17] APPLIED PRIMER TO ALL REPAIR PARTS PER SRM 53-70-51-2R-6 STEP 4 -L INSTALLED REPAIR PARTS ON BS 986; WL 208; RBL 43; PER SRM 53-70-51-2R-6 FIG. 205; SRM 51-40-02-0G-0 AND BOEING DWG. 147A5730.

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