Service difficulty report · Support Frame · Boeing 7377H4

Difficulty date
June 27, 2023
Submitted
July 5, 2023
Operation
Air carrier
Aircraft
N246LV
Make and model
Boeing 7377H4
Aircraft serial
32507
Aircraft time
56,401 hours, 33,937 cycles
Part
Support Frame
Part number
UNKNOWN
Condition
Cracked
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

WING TO BODY SUPPORT FRAME P/N 149A7177-1 AT STATION 540 FWD FLANGE IS CRACKED AT LBL 14<[01] CUT OUT DAMAGE ON FWD FLANGE OF WING TO BODY SUPPORT FRAME AT STA 540 LBL 14;[02] VERIFIED CRACK FREE AFTER CUT OUT IAW B737 NDT P6 51-00-00 P23 TOOL 44291 DUE 03NOV23;[03] ADDING REF TO STEP 1. IAW SRM 51-10-02-0G-0;[04] HFEC OPEN HOLES IAW B737 NDT PART 6; 51-00-00 PROC 16. NO DEFECTS NOTED. TOOL#44291; DUE 03NOV23;[05] REMOVED 3 FASTENERS FOR FLANGE REPAIR I.A.W SRM 51-40-02-0G-0;[06] VERIFIED STEP 5;[07] ACCOMPLISHED FPI OF REPAIR ANGLE IAW SOPM 20-20-02; TYPE 1; METHOD A; LEVEL 3. NO DEFECTS NOTED;[08] REMOVED DAMAGE TO FRAME 149A7177-1 AT STA 540 LBL 14 FWD FLANGE AND REPAIRED IAW EA 23-153-02035;[09] VERIFIED STEP 8<BR>AUDIT CW

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