Service difficulty report · Bear Strap · Boeing 7377H4

Difficulty date
June 13, 2022
Submitted
July 25, 2022
Operation
Air carrier
Aircraft
N478WN
Make and model
Boeing 7377H4
Aircraft serial
33989
Aircraft time
60,197 hours, 35,659 cycles
Part
Bear Strap
Condition
Cracked
Location
R1 Door
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

TYPICAL CRACK FOUND EMANATING FROM INTERNAL FASTENER OPPOSITE FITTING LATCH AT FORWARD GALLEY DOOR (R1) BEAR STRAP ; BS 290-296 ; BETWEEN S-8R AND S-9R. CRACK LENGTH 0.531'. TYPICAL CRACK FOUND EMANATING FROM INTERNAL FASTENER OPPOSITE FITTING LATCH AT FORWARD GALLEY DOOR (R1) BEAR STRAP BS 290-296 BETWEEN S-8R AND S-9R. CRACK LENGTH 0.531". / [01] INSTALLED EWIS PROTECTION AT FORWARD GALLEY DOOR (R1) BEAR STRAP ; BS 290-296 ; REF.B-737-700.SRM 53-10-01-2R-6.;[15] FABRICATED THE REPAIR PARTS ( DOBLER AND TRIPLER.)AS PER REFER TO TABLE 201/REPAIR 6; FIGURE 202. MATERIAL USED 2024-T3. 0.100 IN. P.O#1771721/ 2024-T3. 0.063 IN. P.O#1771721. REF. B737-700. SRM 53-10-01-2R-6. STEP 4-E.;[16] VERIFIED 15. OK TO TREAT AND PRIME.;[17] TREATED AND PRIMED DOUBLER; TRIPLER & FUSELAGE AS PER REF. B-737-700. SRM-53-10-01-2R-6 REPAIR 6. STEP: 4/J - K.;;[22] R1 DOOR CUT OUT; INSTALLED FASTENER AT REPAIR AT 92% COMPLETED REF. B-737-700. SRM-51-40-02-0G-0.;[30] ACCOMPLISHED REPAIR OF CRACK FOUND ON BEAR STRAP AT FWD GALLEY DOOR UPPER FWD CUTOUT CORNER PER INSTRUCTIONS ON ATTACHED EA 22-153-01781 AND B737-700 SRM 53-10-01-2R-6;[31] VERIFIED STEPS #28 AND #29.;[32] FINAL INSPECTION; ACCOMPLISHED BEAR STRAP AT FWD GALLEY DOOR UPPER FWD CUTOUT CORNER REPAIRED PER INSTRUCTIONS ON ATTACHED EA 22-153-01781 AND B737-700 SRM 53-10-01-2R-6.

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