Service difficulty report · Skin · Boeing 7377H4

Difficulty date
July 24, 2021
Submitted
September 15, 2021
Operation
Air carrier
Aircraft
N447WN
Make and model
Boeing 7377H4
Aircraft serial
33720
Aircraft time
58,733 hours, 34,620 cycles
Part
Skin
Condition
Debonded
Location
Rt Wing Te Flap
Stage of operation
IN
How discovered
V
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

RIGHTI WING OUTBOARD AFT FLAP HAS AN AREA OF DISBOND ADJACENT TO THE INBOARD AFT CORNER OF THE TRAILING EDGE WEDGE. / [01] IDENTIFIED MATERIAL OF R/H O/B AFT FLAP IAW SRM 57-53-01-0I-4 FIGURE 1 AND 2; ITEM 2; 4 AND 5; TABLE 2.<BR><BR>DAMAGE IS OUT OF ALLOWABLE DAMAGE LIMITS IAW SRM 57-53-01-1A-4 FIGURE 101 AND 102; PARA 4.A.(8)<BR><BR>FLAP P/N 113A3700-20; REPAIR TO BE ACCOMPLISHED IAW SRM 51-70-10 PER SRM 57-53-01-2R-4 PARA 3.A-B AND FLAG NOTE 1.<BR><BR>VISUALLY EXAMINED EXTENT OF DAMAGE; TAP TESTED - DISBOND NOTED; REMOVED 6' X 9.2' OF LOWER SURFACE SKIN. WATER CONTAMINATION NOTED IAW SRM 51-70-10-2R-0 PARA 6.A; 7.A.(1 AND 3) <BR><BR>REMOVED THE I/B METAL SEAL (2 PIECE) IAW SRM 51-40-02-0G-0 PARA 9.; [02] VERIFIED STEP 1; [03] UPDATED PART REMOVAL REQUIREMENT.; [04] RIGHT WING OUTBOARD AFT FLAP WITH AN AREA OF DISBOND ADJACENT TO THE INBOARD AFT CORNER OF THE TRAILING EDGE WAS REPAIRED ON ATS/CSD WORK ORDER 541512. ALSO UPDATED INSTALLED PART REQUIREMENT. REF SA-M 857M TAG I1080000000WF4G; [05] AFT FLAP P/N 113A3700-20 S/N 001411 REPAIRED ON ATS COMPONENTS WORK ORDER 541512; CUSTOMER PO P0534289-1. 8130-3 AND SWA SERVICEABLE TAG SA-M 857M ISSUED.

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