# SDR SCNA20260317127

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 13, 2026
- Submitted: March 17, 2026
- Operation: Air carrier
- Aircraft: [N5479A](https://openairdocs.org/aircraft/N5479A), registered now
- Make and model: Boeing 737-83N
- Registry model: [Boeing 737-83N](https://openairdocs.org/model/boeing-737-83n) (OpenAirDocs)
- Aircraft serial: 32578
- Aircraft time: 63,555 hours, 41,194 cycles
- System (JASC): [5410 · Nacelle/Pylon, Main Frame](https://openairdocs.org/jasc/5410)
- Part: Cowl Door
- Part number: 314220015
- Part serial: 12401001
- Condition: Unlatched
- Location: Zone 400
- Part time: 57,563 hours, 37,515 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: D
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SCNA20260317127

## Discrepancy

ABNORMAL ACFT VIBRATION AFTER TAKEOFF. ACFT REQUIRED SUBSTANTIAL RT AILERON TO MAINTAIN WINGS LEVEL. RETURNED TO LAL. POST FLT REVEALED NR 1 ENG COWL UNLATCHED INFLT.  ACFT INSPECTED & REPAIRED EXCEPT FOR NR 42 & 43. COMPONENTS REPLACED: NR 2 FUEL HOSE, NR 3 HYD PUMP DRAIN LINE, NR 4 IDG DRAIN LINE, NR 5 HYD PRESSURE HOSE, NR 6 STARTER DUCT SUPPORT LINK, NR 7 INBD T/R PORT CAP, NR 8 J5 HARNESS, NR 9 LOWER FANCASE DETECTION ASSY, NR 10 LT FAN COWL, NR 11 RT FAN COWL, NR 13 THUMBNAIL FAIRING, NR 19 INLET COWL, NR 20 HFEC PERFORMED ON COWL ATTACHMENT FITTINGS, NR 21 OTBD FANCOWL ATTACHMENT FITTING, NR 51 REPLACED EEC.

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