Service difficulty report · Bear Strap · Boeing 7377H4

Difficulty date
October 8, 2021
Submitted
November 29, 2021
Operation
Air carrier
Aircraft
N777QC
Make and model
Boeing 7377H4
Aircraft serial
30592
Aircraft time
68,673 hours, 40,726 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

R1 DOOR BEAR STRAP BS 290 - 296, S8 - 9R, FOUND A CRACK INDICATION FROM FASTENER HOLE FWD OF FITTING LATCH. CRACK LENGTH=1.772'. STARTED REMOVING FASTENERS COMMON TO REPAIR. PERFORMED HFEC ON CUTOUT AREA. IAW NDT PART 6 51-00-00 PROCE 23. NO CRACKS FOUND. HFEC ROTO ON FASTENERS OPEN HOLES IAW NDT PART 651-00-00 PROCE 16. NO CRACKS FOUND. HFEC COUNTERSINKS OPEN HOLES IAW NDT PART 6 53-30-00 PROCE 3. NO CRACKS FOUND. COMPLETED REMOVAL OF FASTENERS COMMON TO REPAIR IAW SRM 51-40-02-0G-0 & 53-10-01-2R-6. CUT-OUT DAMAGED IAW SRM 53-10-01-2R-6. REMOVED SEAL DEPRESSOR 51-40-02-0G-0, COMPLETED FABRICATION OF REPAIRDOUBLER, TRIPLER FILLER AND TAPER SHIMS PER B737SRM53-10-01-2R-6.

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