Service difficulty report · Skin · Boeing 737*

Difficulty date
February 11, 2022
Submitted
March 16, 2022
Operation
Air carrier
Aircraft
N237WN
Make and model
Boeing 737*
Aircraft serial
34632
Aircraft time
53,602 hours, 31,836 cycles
Part
Skin
Condition
Cracked
Location
L/H Horiz. Stab.
Stage of operation
UK
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 LEFT HORIZONTAL STABILIZER LOWER SKIN; STAB STA 184.70; I/B FASTENER ROW;10.5' FROM REAR SPAR. LENGTH OF CRACK : 0.375 CRACK FOUND AT LEFT HORIONTAL STABILIER LOWER SKIN STAB STA 184.70 I/B FASTENER ROW10.5' FROM REAR SPAR. LENGTH OF CRACK : 0.375 / [01] REMOVED FWD SPAR ACCESS PANEL # 331BZ FOR LOWER INSPAR SKIN REPAIR AS PER REF B737 SRM 51-40-02-0G-0.;;[09] PERFORMED COUNTERSINK INSP. ON EXISTING HOLES IN REPAIR AREA OF L/HORIZ. STAB. LWR SKIN STAB STA 184.70 I/B FASTENER ROW 10.5? FROM REAR SPAR IAW B737 NDT PART 6 53-30-00 PROC. 3. NO CRACKS; EQUIP: NORTEC 600 B/C 166317 CAL DUE: 10/22;[10] PERFORMED DVI INSPECTION L/H HRZ STB. LOWER SKIN. NO DAMAGE FOUND.;[11] PERFORMED DVI INSPECTION L/H HRZ STB. LOWER SKIN PER B-737 SRM 51-10-04-0G-0. NO DAMAGE FOUND.;[12] OK TO INSTALL REPAIR PARTS AT LEFT HRZ. STB. LOWER SKIN;[13] INSTALLED REPAIR PARTS AT L/H HORIZONTAL STAB. LOWER SKIN PER REF B737-700 SRM 51-40-02-0G-0 AND CCO 55-10-0014(SB 737-55-1096). MIXED SEALANT BMS 5-95 AT 18:30 03/03/2022; SQUEEZE OUT AND FASTENER INSTALLATION VERIFICATION DUE BY 10:30 03/05/2022.