Service difficulty report · Skin · Boeing 737*

Difficulty date
February 17, 2022
Submitted
March 3, 2022
Operation
Air carrier
Aircraft
N910WN
Make and model
Boeing 737*
Aircraft serial
36618
Aircraft time
45,961 hours, 27,458 cycles
Part
Skin
Condition
Corroded
Location
Aft Fuselage
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

SKIN PITTING AND ANOMALIES FROM STA 887 TO 1016 STR 4L TO 4R / [01] CORROSION REMOVAL STEPS 1- 20;[24] RESQUEST OK TO RE-INSTALL FASTENERS IN PANEL SKIN L/H BS 927+10' TO 947+10' STR 3 ; L/H BS 947 TO 967 STR 4 ; L/H BS 967 BTW STR 3 -STR4 ; L/H BS 987+14' TO 1006 STR 4 ; L/H BS 987+16' TO 1016 STR 3 ; L/H 1006 BTW STR 3- STR 4. R/H BS 947 TO 967 STR 3 ; R/H BS 947 TO 967 STR 4.;[25] INSPECTED & VERIFIED CORRECTIVE ACTION ITEM 24. OK TO INSTALL FASTENERS WHERE PREVIOUSLY REMOVED AT BS 927+10 - 947+10 S-3L; BS 947 - 967 S-4L; BS 967 BTW S-3L & S-4L; BS 987+14 - 1006 S-4L; BS 987+16 - 1016 S-3L; BS 1006 BTW S-3L- S-4L; BS 947 - 967 S-3R & BS 947 - 967 S-4R.;[26] INSTALLED NEW FASTENERS IN SKIN PANEL L/H BS 927+10' TO 947+10' STR 3 ; L/H BS 947 TO 967 STR 4 ; L/H BS 967 BTW STR 3 -STR4 ; L/H BS 987+14' TO 1006 STR 4 ; L/H BS 987+16' TO 1016 STR 3 ; L/H 1006 BTW STR 3- STR 4. R/H BS 947 TO 967 STR 3 ; R/H BS 947 TO 967 STR 4. IAW SRM 51-40-02 AND DWG :147A0001 ID:0012 REV:A ; DWG: 147A0030 ID:0002 REV:B ; DWG:147A0001 ID:0001 REV:- ; DWG: 147A0030 ID:0001 REV:B.;[27] INSPECTED ACTION 26;[28] ACCOMPLISHED MAP GRID FOR BS 927 AT SHEAR TIE BETWEEN STR 3L-4L LOWEST THICKNESS IS .067 IAW 737 NDTM PART 4; 51-00-00 PROCEDURE 2 TOOL# ATS2342;