Service difficulty report · Doubler · Boeing 7377BD

Difficulty date
February 1, 2022
Submitted
February 28, 2022
Operation
Air carrier
Aircraft
N7752B
Make and model
Boeing 7377BD
Aircraft serial
33943
Aircraft time
44,008 hours, 22,440 cycles
Part
Doubler
Condition
Cracked
Location
R/H Horiz. Stab.
Stage of operation
UK
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 FOUND, RT HORIONTAL STAB HSS 193.90; I/B ROW;16" FROM FWD SPAR. LENGTH OF CRACK 1'. STRIPPED PAINT ON LOWER SKIN IAW AMM 51-21-11-150-810; REMOVED FASTENERS IAW SRM 51-40-02-0G-0. PERFORMED CUTOUT OF DAMAGE IAW SRM 55-10-01-2R-11 & 51-10-02-0G-0. PERFORMED HFEC COUNTERSUNK INSP ON FASTENER OPEN HOLES IAW NDT PART 6 53-30-00 PROCE 3. NO CRACKS FOUND. LOCATED & DRILLED DOUBLER & SKIN IAW SRM 51-40-05-0G-0 & 55-10-01-2R-11 REPAIR 11. COUNTERSUNK FASTENER HOLES IAW SRM 55-10-01-2R-11 REPAIR 11 & SRM 51-40-08-0G-0. TREATED & PRIMED DOUBLER & SKIN IAW SOPM 20-44-04 AND 20-43-03. INSTALLED REPAIR IAW SRM 51-40-02-0G-0 & SRM 55-10-01-2R-11 REPAIR 11.

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