Service difficulty report · Slat · Boeing 7377H4

Difficulty date
June 11, 2022
Submitted
July 14, 2022
Operation
Air carrier
Aircraft
N488WN
Make and model
Boeing 7377H4
Aircraft serial
33853
Aircraft time
59,468 hours, 35,169 cycles
Part
Slat
Condition
Cracked
Location
L/H Wing
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

#3 SLAT CRACKED ON LOWER NOSE SKIN AT ACTUATOR FITTING I/B 3RD FROM L/E FASTENER HOLE. (MARKED) / [01] NDI HFEC VERIFY CRACK ON #3 SLAT LOWER SKIN AT ACTUATOR FITTING I/B 3RD FROM L/E FASTENER HOLE IAW SRM 51-10-02-0G-2; STEP 5.C.;[02] HFEC INSPECTED AROUND DISCREPANT FASTENER ON #3 SLAT LOWER NOSE SKIN PER NDTM PART 6; 51-00-00 PROCEDURE 23. VERIFIED CRACK STARTING AT FASTENER HOLE EXISTS AND MARKED END.<BR><BR>CAL ID: ATS2353 S/N: 6000519684 DUE: 01/2023;07] FABRICATED REPAIR PARTS (1)DOUBLER 7075 T6 CLAD 0.071' LOT# 1478276-1; (2) FILLER 7075 T6 CLAD 0.063' LOT# 1375297-3 APPLIED CHEMICAL CONVERSION COATING IAW SRM 57-42-01-2R-8 FIG 202 ALTERNATIVE 1; OK TO PRIME;[11] INSTALLED REPAIR PARTS AT #3 SLAT LOWER NOSE SKIN AT ACTUATOR RIB IAW SRM 57-42-01-2R-8 FIG 202 ALTERNATIVE 1;16] SRM 57-42-01-2R-8 IS APPLICABLE TO THIS REPAIR.;18] ACCOMPLISHED REPAIR AT SLAT #3 LOWER NOSE SKIN AT ACTUATOR FITTING IAW SRM 57-42-01-2R-8 FIG 202 ALTERNATIVE 1;[19] VERIFIED STEP 1-4 ARE COMPLETE. VERIFIED MEASUREMENT TABLE. WORKSCOPE COMPLETE

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