Service difficulty report · Skate Angle · Boeing 7377H4

Difficulty date
June 17, 2021
Submitted
July 14, 2021
Operation
Air carrier
Aircraft
N226WN
Make and model
Boeing 7377H4
Aircraft serial
32494
Aircraft time
53,110 hours, 31,655 cycles
Part
Skate Angle
Condition
Chafed
Location
Bs 1016-1019
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

FIN TO BODY SKATE ANGLE IS CHAFED AT B.S. 1016-1019; L.B.L. 14; W.L. 306.5. ; / [01] VERIFY SRM 53-80-71-2R-6 REPAIR 6 IS APPLICABLE FOR THIS AIRCRAFT.; [02] FIN TO BODY SKATE ANGLE AT BS 1016-1019 LBL 14; WL 306.5 FOUND TO BE OUT OF LIMITS IAW SRM 51-10-02-OG-O; [03] CUT AND REMOVED DAMAGE ON FIN TO BODY SKATE ANGLE AT BS 1016-1025 LBL 14; WL 306.5 IAW SRM 53-80-71-2R-6; REPAIR 6.; [04] FORMED ANGLE REPAIR; FROM MATERIAL 2024T0; 0.063' CLAD SHEET LOT# 1375061-1 IAW SRM 53-80-71-2R-6 REPAIR 6 REQ. HT TO T42 CONDITION; [05] VERIFIED PART IS OUT OF LIMITS; AND NEW PART FORMED AWAITING HEAT TREAT; [06] REQ; HFEC ON CUT OUT FOR FREE CRACK CONDITION; ALL OPEN HOLE AND COUNTERSINK OPEN HOLE. 53-80-71-2R-6 REPAIR 6; [07] HFEC INSP CUT OUT IAW 737 NDTM PART 6 51-00-00 PROCEDURE 23; NO CRACKS NOTED. EQUIP ID#: IS000450 S/N: N500D000M120071; [08] HFEC INSP OPEN HOLES IAW 737 NDTM PART 6 51-00-00 PROCEDURE 16; NO CRACKS NOTED. EQUIP ID#: IS000450 S/N: N500D000M120071 EQUIP ID#: ATS2407 S/N: MM1591DD064104; [09] HFEC INSP COUNTERSINKS IAW 737 NDTM PART 6 53-30-00 PROCEDURE 3; NO CRACKS NOTED. EQUIP ID#: IS000450 S/N: N500D000M120071 EQUIP ID#: ATS2407 S/N: MM1591DD064104; [10] RECEIVED FORMED ANGLE REPAIR FROM OSS TO HEAT TREATMENT T42 PO NBR 827968 IAW SRM 53-80-71-2R-6 REPAIR 6; [11] LOCATED AND DRILLED REPAIR ANGLE IAW SRM 53-80-71-2R-6 REPAIR 6 FABRICATED STRAP FROM MATERIAL 2024T3; 0.080' CLAD SHEET LOT# 1447572-1 IAW SRM 53-80-71-2R

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