Service difficulty report · Skin · Boeing 7377H4

Difficulty date
March 22, 2022
Submitted
April 14, 2022
Operation
Air carrier
Aircraft
N920WN
Make and model
Boeing 7377H4
Aircraft serial
32460
Aircraft time
45,982 hours, 27,487 cycles
Part
Skin
Condition
Cracked
Location
Rh 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

CRACK FOUND AT RT HORIZONTAL STABILIZER LOWER SKIN AT STAB STA 184.70; 10' FROM REAR SPAR; 2ND ROW I/B. CRACK LENGTH : 1'. CRACK FOUND AT RT HORIONTAL STABILIER LOWER SKIN AT STAB STA 184.70 10' FROM REAR SPAR 2ND ROW I/B. CRACK LENGTH : 1'. / PERFORMED CUT OUT ON DAMAGED AREA AT RT HORIZONTAL STAB LOWER SKIN AT STA 184.70 10'IAW B737SRM 55-10-01-2R-11EQUIP: NORTEC 600 B/C 166316 CAL DUE: 10/22; PERFORMED ROTO INSP. ON REPAIR AREA EXISTING HOLES ON R/HORIZ STAB. LWR SKIN @ STAB. STA 184.70 10? FROM REAR SPAR 2ND ROW I/B IAW B737 NDT PART 6 51-00-00 PROC. 16. NO CRACKS; EQUIP: NORTEC 600 B/C 166316 CAL DUE: 10/22; PERFORMED COUNTERSINK INSP. ON REPAIR AREA EXISTING HOLES ON R/HORIZ STAB. LWR SKIN @ STAB. STA 184.70 10? FROM REAR SPAR 2ND ROW I/B IAW B737 NDT PART 6 53-30-00 PROC. 3. NO CRACKS; EQUIP: NORTEC 600 B/C 166316 CAL DUE: 10/22;RIB REPAIR AT STA 92.70 CONFORMS TO SRM 55-10-09-2R-5 REPAIR #5] RIB REPAIR AT STA 120.30 RIB#4 STIFFENER#3 CONFORMS TO SRM 55-10-09-2R-5 REPAIR #5 RIB REPAIR AT STA 129.5 RIB#5 STIFFENER#3 CONFORMS TO SRM 55-10-09-2R-5 REPAIR #5; RIB REPAIR AT STA 166.30 RIB#9 STIFFENER#3 CONFORMS TO SRM 55-10-09-2R-5 REPAIR #5; REMOVED FASTENERS AND PERFORMED LAY OUT .PENDING ENGINEERING IAW B737 SRM 51-40-02-0G-0 AND EA#22-155-00962-WIP1.; DRILLED NEW LAY OUT AND STARED FABRICATED MODIFIED DOUBLER 0.080 AND MODIFIED FILLER 0.040 IAW B737 AE# 22-155-00692-WIP1.;

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