Service difficulty report · Skin · Boeing 7377H4

Difficulty date
June 10, 2022
Submitted
July 25, 2022
Operation
Air carrier
Aircraft
N478WN
Make and model
Boeing 7377H4
Aircraft serial
33989
Aircraft time
60,197 hours, 35,659 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

LH HORIZINTAL STABILIZER LOWER SKIN AT STAB RIB 184.70 AND 10 INCHES FROM AFT END OF SKIN HAS A ONE INCH CRACK. LH HORIINTAL STABILIER LOWER SKIN AT STAB RIB 184.70 AND 10 INCHES FROM AFT END OF SKIN HAS A ONE INCH CRACK. / [01] REMOVED AT LT HORIZONTAL STABILIZER WEB PANEL # 331BZ FOR ACCESS TO REPAIR AREA IN IAW SRM 51-40-02-0G-0;[18] TREATED AND PRIMED L/H HORINZ STAB LOWER SKIN REPAIR AREA REF B73-700 SRM 51-20-01-0G-0.;[19] VERIFIED STEP 18.;[20] OK TO TOP COAT;[21] APPLIED TOPCOAT AT L/H HORIZONTAL STAB. LOWER SKIN STA RIB 184.70 IAW B737AMM 51-21-73-370-803;[22] VERIFIED STEP#21;[23] OK TO REINSTALL WEB PANEL 331BZ;[24] INSTALLED ACCESS PANEL #331BZ AS PER B-737-700 SRM. 51-40-02-0G-0 AND DWG #182A2401;[25] VERIFIED STEP 24.;[26] (FINAL) REMOVED THE DAMAGE AREA AT LT HORIZONTAL STABILIZER OF LOWER SURFACE SKIN AT STA 184.70 AND 10 INCHES FROM AFT END IN IAW SRM 55-10-01-2R-11 FIG 204 SHEET 2. ALL WORK REPAIRS AND PROCEDURES ACCOMPLISHED AS PER EA 22-155-01829-WIP1.;[27] VERIFIED AND INSPECTED STEP#26. FINAL.

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