Service difficulty report · Skin · Boeing 757224

Difficulty date
April 22, 2022
Submitted
April 25, 2022
Operation
Air carrier
Aircraft
N34137
Make and model
Boeing 757224
Aircraft serial
30229
Aircraft time
78,916 hours, 18,944 cycles
Part
Skin
Part number
141N3331
Condition
Dented
Location
Sta 399
Stage of operation
IN
How discovered
O
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

FOUND DENT IN FUSELAGE 2FT AFT OF L1 DOOR APPROX STATION 399 STRINGER S16 DENT APPROX DIMENSIONS 2IN WIDE 3IN HIGH AND 1/8IN DEEP. DENT MEASURSES 1.9 X 2.7 IN WITH DEPTH OF 0.120". LOCATED 6.5 IN REQUESTING QC DO A SKIN THICKNESS INSPECTION AT BLENDED AREA OF AS REQUESTED PERFORMED THICKNESS MEASUREMENT OF BLENDED AREA REF AFT OF STA 395 AT STRINGER 16L. BLENDED SCRATCHES. DENT . 757 NDT PART 4-51-00-01. LOWEST RECORDED THICKNESS OF .056". VERIFIED INSURANCE CUT PER SRM 53-00-01-2R-28 4 F. ALSO CONFIRMED ORIGINAL THICKNESS MEASUREMENT OF 0.062". REMOVED DAMAGE SKIN PER SRM 53-00-01-2R-28 REPAIR 28 PARA 4 PERFORMED HFEC OF CUTOUT AND HOLES FROM REMOVED FASTENERS PER PERFORMED INSPECTION OF DAMAGE REMOVAL PER SRM 53-00-01-2R-28 PERFORMED INSURANCE CUT PER SRM 53-00-01-2R-28 REPAIR 26 PARA 4 STEPA THRU D NDT PT 6 51-00-19, AND 51-00-16 TO SATISFY 4 E AND G OF SRM REPAIR 28 PARA 4 STEPA THRU D. OK TO CONTINUE. STEP F AND VERFIED ORGINAL SKIN AS .062" WITH MIC 53-00-01-2R-28. NO CRACK INDICATIONS OBSERVED. RII CW ON STEPS I THRU O, AND VERIFIED WASHERS, OK TO INSTALL REPAIR. VERIFIED REPAIR -3 FILLER AS .063 2024-T3 CLAD PO 8598582 AND -1 MATERIAL VERIFICATION CW PER ABOVE, OK TO FABRICATE. PER SRM 53-00-01-2R-28 REPAIR 28 PERFORMED PARA 4 STEPS I THRU DOUBLER AS .071 2024-T3 CLAD PO 7217276345 PER SRM O INSTALLED REPAIR WASHER WERE NEEDED PER PARA 4 STEP P(1) O.K. 53-00-01-2R-28. TO INSTALL ALL REPAIR PARTS COMPLETED HFEC INSP OF CUTOUT AREA IAW 757 NDT PT6 51-00-19 . VERIF