Service difficulty report · Skin · Boeing 737

Difficulty date
November 6, 2021
Submitted
April 27, 2022
Operation
Air carrier
Aircraft
N909WN
Make and model
Boeing 737
Aircraft serial
32458
Aircraft time
45,975 hours, 27,620 cycles
Part
Skin
Condition
Cracked
Location
Lh Hor 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

SUPPLEMENTAL INFORMATION: LH HORIZONTAL STAB LOWER INSPAR SKIN HAS A 1' CRACK AT STAB STA.193.90. APPROX. 18' FROM REAR SPAR (VERIFIED BY HFEC) ; / [01] GAINED ACCESS AND REMOVED DAMAGE PER SRM 55-10-01-2R-11.; [02] PERFORMED NDT AROUND DAMAGE CUT OUT; NO DEFECTS FOUND PER NDT PART6 51-00-00 PRO23.; [03] PERFORMED NDT OF FASTENER HOLES PER NDT MANUAL PART 6 51-00-00 PROCEDURE 16. NO DEFECTS NOTED.; [04] FABRICATED DOUBLER AND FILLER IAW SRM 55-10-01-2R-11. TREATED IAW SRM 51-20-01 AND PRIMED IAW SOPM 20-44-04.; [05] INSPECTED FABRICATED DOUBLER AND FILLER; [06] OK TO INSTALL REPAIR PARTS.; [07] INSTALLED REPAIR PARTS IAW SRM 55-10-01-2R-11.; [08] C/W INSPECTION OF STEPS 6 AND 7; [09] COMPLETED REPAIR PER SRM 55-10-01-2R-11.; [10] C/W INSPECTION