Service difficulty report · Bear Strap · Boeing 7377H4

Difficulty date
March 17, 2022
Submitted
April 19, 2022
Operation
Air carrier
Aircraft
N472WN
Make and model
Boeing 7377H4
Aircraft serial
33831
Aircraft time
58,559 hours, 34,804 cycles
Part
Bear Strap
Condition
Cracked
Location
Fuselage
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

CRACK IN BEAR STRAP AT B.S. 294.5 BETWEEN STRINGERS 8 RIGHT AND 9 RIGHT JUST FORWARD OF FORWARD SERVICE DOOR. / [01] TRIMED DAMAGED AREA AT BEARSTRAP BS 294.5 BETWEEN STR 8 - STR 9 RIGHT JUST FWD OF FWD SERVICE DOOR L=1.2 W= 1.0 PER SRM 53-10-01-2R-6 REP. 6 STEP 4 C;[07] FABRICATED -1 DOUBLER FROM 2024T3 .100 LOT # 1486515-1; -2 TRIPLER FROM 2024T3 .063 LOT #1478284-1; -4 FILLER FROM 2024T3 .090 LOT# 1468724-1; -6 TAPERED SHIM FROM 2024T3 .160 LOT #1419195-1; -7 FLAT SHIM FROM 2024T3 .063 LOT #1478284-1; AT FUSELAGE SKIN BS 294.5 FWD SIDE SERVICE DOOR PER SRM 53-10-01-2R-6 REP 6 OK TO TREAT AND PRIME REPAIR PARTS;[08] VERIFIED CORRECTIVE ACTION 7.;[09] APPLIED CHEMICAL CONVERSION COATING AND PRIMED REPAIR PARTS PER SRM 53-10-01-2R-6 REP 6 STEP 4 J;K<BR><BR>INSTALLED COUNTERSINK REPAIR WASHERS AT REPAIR AREA PER SRM 53-10-01-2R-6 REP 6 STEP 4 L.<BR><BR>OK TO INSTALL ALLREPAIR PARTS;[10] VERIFIED CORRECTIVE ACTION 9;[11] INSTALLED 100% TEMPORARILY/PERMANENT FASTENERS WITH BMS 5-95 C-20 USED; MIX DATE 30/03 AT 16:21; SQUEEZE-OUT TIME EXPIRES 31/03 AT 12:21 IAW SOPM 20-50-19.;[12] VERIFIED CORRECTIVE ACTION #11;[13] INSTALLED REPAIR PARTS -1;-2;-4;-6 AND -7 AT FWD SERVICE DOOR FWD SIDE PER SRM 53-10-01-2R-6 REP. 6 STEP 4 M;N;19] ' DAMAGE REPAIRED PER EA 22-153-00853 (737-700 SRM 53-10-01-2R-6; REPAIR 6). REPETITIVE INSPECTION PROGRAM DEFINED IN EA 22-153-00853-INSP.';[20] VERIFIED CORRECTIVE ACTION 19.

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