SDR SWAA2021122140286

Service difficulty report · Angle · Boeing 7377H4

Difficulty date: November 3, 2021
Submitted: December 21, 2021
Operation: Air carrier
Aircraft: N776WN
Make and model: Boeing 7377H4
Aircraft serial: 30591
Aircraft time: 68,765 hours, 40,619 cycles
System (JASC): 5314 · Fuselage Main, Keel
Part: Angle
Condition: Cracked
Location: Keel Beam
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

SMALL ANGLE CRACKED AT AFT KEEL BEAM LOWER BS 727 AND LBL 21. CRACK CONFIRMED IAW NDTM PART 6 ;51-00-00 PROCEDURE 23. CRACK LENGTH: 0.669'. REMOVED SMALL ANGLE AT AFT KEEL BEAM IAW SRM 51-40-02-OG-0. FABRICATEA NEW ANGLE IAW DWG 149A7692. LOCATED AND DRILLED THE NEW ANGLE IAW SRM 51-10-02-0G-0. TREATED AND PRIMED IAW AMM-51-21-72-370-801. ACCOMPLISHED ANGLE INSTALLATION AT AFT KEEL BEAM LOWER STA. 727 AND LBL21 IAW DWG 149A7692 AND BAC 5602.

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