# SDR SWAA2023062149667

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 17, 2023
- Submitted: June 21, 2023
- Operation: Air carrier
- Aircraft: [N429WN](https://openairdocs.org/aircraft/N429WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33658
- Aircraft time: 66,602 hours, 39,316 cycles
- System (JASC): [5753 · Trailing Edge Flaps](https://openairdocs.org/jasc/5753)
- Part: Flap
- Part number: UNKNOWN
- Condition: Delaminated
- Location: Zn 500 Left Wing
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2023062149667

## Discrepancy

LT WING O/B AFT FLAP HAS AREA OF DELAMINATION ON UPPER SURFACE NEAR I/B AFT CORNER.<[01] IDENTIFIED AFT FLAP IAW SRM 57-53-01-0I-4; FIG 2; TABLE 2; ITEM 2.<BR><BR>DAMAGE IS BEYOND ALLOWABLE DAMAGE LIMITS IAW SRM 57-53-01-1A-4 PARA 4.A (5).<BR><BR>DAMAGE IS REPAIRABLE IAW SRM 51-70-10-2R-4 AS DIRECTED BY SRM 57-53-01-2R-4 PARA 3.B.<BR><BR>STARTED DAMAGE REMOVAL OF UPPER SKIN (APPROX 10' X 10') IAW SRM 51-70-10-2R-4 PARA 3.A.;[02] FLAP ASSEMBLY WILL BE REMOVED AND REINSTALLED ON TTG8Q00L4LDF.;[03] UPDATED PARTS REQUIREMENT;[04] /LT WING O/B AFT FLAP WAS REPLACED AND WILL BE REMOVED AND INSTALLED ON THE AIRCRAFT ON FAULT TTG8Q00L4LDF.;[05] VERIFIED CORRECTIVE ACTION STEPS 1-4. TASK CARD COMPLETE.

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