Service difficulty report · Skin · Boeing 7377H4

Difficulty date
October 24, 2022
Submitted
November 17, 2022
Operation
Air carrier
Aircraft
N269WN
Make and model
Boeing 7377H4
Aircraft serial
32526
Aircraft time
52,572 hours, 31,375 cycles
Part
Skin
Condition
Cracked
Location
Zn 300 Stabilize
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 FOUND AT LT HORIZ.STAB. LOWER SKIN ;STAB STA 193.90 ; 16.5" FROM FRONT SPAR ;I/B ROW. CRACK LENGTH : 0.5" CRACK FOUND AT LT HORI.STAB. LOWER SKIN STAB STA 193.90 16.5" FROM FRONT SPAR I/B ROW. CRACK LENGTH : 0.5" / [01] ACCOMPLISHED LAYOUT OF PROPOSED REPAIR REF SRM 55-10-01-2R-11 REPAIR 11;[02] FABRICATED REPAIR DOUBLER AND FILLER FOR REPAIRS AT LH HORIZONTAL STAB LOWER SKIN STAB STA 193.90 REF SRM 55-10-01-2R-11;[04] TREATED AND PRIMED REPAIR DUBLER; FILLER AND AFFECTED AREA ON SKIN AT LH HORIZONTAL STAB LOWER SKIN STAB STA 193.90 REF AMM 51-21-41-370-803 AND 51-21-72-370-80[08] INSTALLED REPAIR DOUBLER AND FILLER ON L/H HORIZONTAL STAB LOWER SKIN STAB STA 193.90 REF SRM 55-10-01-2R-11 REPAIR 11;[13] REINSTALLED REPAIR DOUBLER AND FILLER ON L/H HORIZONTAL STAB LOWER SKIN STAB STA 193.90 REF SRM 55-10-01-2R-11 REPAIR 11;[14] LATE ENTRY: A NEW FAULT WAS GENERATED TO REMOVE REPAIR DOUBLER FOR NDT INSP. ON CARD: TTG8Q00FWN4C.;[15] APPLIED SEALANT AROUND THE EDGES OF THE EXT. DOUBLER AS PER SRM 51-20-05.;[16] LATE ENTRY: ADD INF. ON STEP #13: MIXED SEALANT ON 11/05/22 @ 1;00AM; APPLIED @ 1:10AM. SQUEEZE TIME: ON 11/05/22 @ 3:00M.;[17] APPLIED TOPCOAT TO THE EXT. REPAIR DOUBLER AS PER AMM 51-21-73.;[18] APPLIED CIC AT INT. AREA OF REPAIR AS PER SRM 51-20-01.;[19] VERIFIED STEPS 8; 9 AND 13-16;[20] VERIFIED STEPS 18 AND 19;[21] TASK C/W;[22] TASK C/W

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