Service difficulty report · Skin · Boeing 7377H4

Difficulty date
July 31, 2022
Submitted
August 29, 2022
Operation
Air carrier
Aircraft
N261WN
Make and model
Boeing 7377H4
Aircraft serial
32517
Aircraft time
53,121 hours, 31,580 cycles
Part
Skin
Condition
Cracked
Location
L/H Horiz. Stab.
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 L/H HORIZONTAL STAB LOWER SKIN STAB STA 193.90; 17' FROM FWD. SPAR; I/B ROW. CRACK LENGTH: 1.25' CRACK FOUND AT L/H HORIONTAL STAB LOWER SKIN STAB STA 193.90 17&#34; FROM FWD. SPAR I/B ROW. CRACK LENGTH: 1.25&#34; / [01] REMOVED PAINT FOR ACCESS FASTENER FOR REPAIR AT L/H STA 193.90 IAW B737 AMM51-21-11-150-801.[25] REMOVED PAINT FOR ACCESS FASTENER FOR REPAIR AT L/H STA 193.90 IAW B737 AMM51-21-11-150-801.<BR>REMOVED FASTENERS LOWER SKIN STA 193.90 FOR ACCESS REPAIR IAW B737 SRM 51-40-02-0G-0.<BR>REMOVED DAMAGED ON AREA LOWER OF SKIN [CRACK ] AT L/H HORIZONTAL STAB STA 193.90 17' FROM FWD SPAR I/B ROW IAW B737 SRM 55-10-01-2R-11 REPAIR 11.PERFORMED HFEC INSP ON CUTOUT AREA IAW B737 NDT P6 51-00-00 PROC.23; NO CRACKS<BR>TOOL USED : NORTEC 600 B/C 172389 CALDUE: 03/23.PERFORMED ROTO INSP ON ALL EXISTING HOLES IAW B737 NDT P6 51-00-00 PROC.16; NO CRACKS<BR>TOOL USED : NORTEC 600 B/C 172389 CALDUE: 03/23.<BR>PERFORMED COUNTERSINK INSP ON ALL EXISTING COUNTERSUNK HOLES IAW B737 NDT P6 53-30-00 PROC.3; NO CRACKS<BR>TOOL USED : NORTEC 600 B/C 172389 CALDUE: 03/23.<BR>FABRICATED FILLER AT L/H HORIZONTAL STAB LOWER SKIN STA 193.90 MATERIAL USED 2024 T3 .071 ALUMINUM CLAP PO # 1749426 IAW B737 SRM 5510-01-2R-11 REPAIR 11.<BR>FABRICATED DOUBLER AT L/H HORIZONTAL STAB LOWER SKIN STA 193.90 .MATERIAL USED 2024 T3 -0.090 ALUMINUM CLAP .PO#1727238 IAW B737 SRM 55-10-01-2R-11 REPAIR 11

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