Service difficulty report · Slat · Boeing 7377Q8

Difficulty date
March 15, 2023
Submitted
March 30, 2023
Operation
Air carrier
Aircraft
N7819A
Make and model
Boeing 7377Q8
Aircraft serial
30649
Aircraft time
65,235 hours, 39,673 cycles
Part
Slat
Condition
Cracked
Location
Zn 600 Right Win
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

#2 L/E SLAT NOSE SKIN AT ACTUATOR RIB. 2EA CRACKS FOUND IN FASTENER HOLE COUNTERSINK LOCATIONS MARKED.<[01] REMOVED PANELS 524CB; 524EB & FLEX SKIN AT ACTUATOR RIB ON #2 SLAT TO ACCESS REPAIR IAW SOPM 20-50-01.;[02] APPLICABLE REPAIR FOR #2 L/E SLAT NOSE SKIN AT ACTUATOR RIB. 2EA CRACKS FOUND IN FASTENER HOLE COUNTERSINK LOCATIONS MARKED THAT WILL BE USED FOR THIS REPAIR IS SRM 57-42-01-2R-8.REPAIR 8.;[03] VERIFIED APPLICABILITY OF SRM 57-42-01-2R-8 REPAIR 8.;[04] UPDATED MEASUREMENTS SECTION.;[05] REMOVED DAMAGE IAW SRM 57-42-01-2R-8 STEP 4.F (1)(A - C).;[06] VERIFIED ITEMS 4;5 CORRECTIVE ACTIONS.;[07] HFEC INSPECTED CUTOUT AREA IAW 737 NDTM PART 6 51-00-00 PROCEDURE 23.<BR>NO CRACKS NOTED.<BR><BR>HFEC INSPECTED OPEN HOLES IAW 737 NDTM PART 6 51-00-00 PROCEDURE 16. <BR>2EA CRACKS NOTED IN TERMINAL FITTING. MARKED LOCATIONS.<BR><BR>HFEC INSPECTED COUNTERSINKS IAW 737 NDTM PART 6 53-30-00 PROCEDURE 3. <BR>NO CRACKS NOTED.<BR><BR>EQUIP USED:<BR>-NORTEC 600 ID: ATS1465 CAL DUE: 09/23<BR><BR>NRC GENERATED ON CUSTOMER CARD: TTG8Q00JWJCL;[08] HFEC INSPECTION REVEALED CRACKS IN THE ACTUATOR ATTACH FITTING. THE #2 SLAT WILL BE REPLACED ON FAULT #TTG8Q00JWJCL.;[09] FAULT TTG8Q00K58B3 RAISED AGAINST OFF UNIT SLAT MPN 114A5020-3 S/N 001055;[10] THE #2 SLAT WILL BE REPAIRED ON FAULT TTG8Q00K58B3.;[11] VERIFIED CORRECTIVE ACTION 10;[12] CLOSING RII LABOR ROW NO RII WORK PERFORMED ON THIS FAULT;[13] VERIFIED MEASUREMENT TABLE

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