# SDR CALA2026071417758

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 13, 2026
- Submitted: July 15, 2026
- Operation: Air carrier
- Aircraft: [N37521](https://openairdocs.org/aircraft/N37521), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 64497
- Aircraft time: 18,129 hours, 6,039 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Frame
- Part number: 143A61185
- Condition: Cracked
- Location: Zone 100
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026071417758

## Discrepancy

FWD CARGO DOOR, UPPER FORMED FRAME WITH CRACK ON UPPER CHORD AT BS 477.  PERFORMED THE REPAIR TO THE UPPER FRAME IAW ECRA 5230-02326, .THE REPAIR ACCOMPLISHED IN PART 1 IS A CATEGORY B REPAIR REQUIRING REPETITIVE INSPECTION REQUIRMENTS (RIR) STATED IN PART 2. PERFORMED THE REPAIR TO THE UPPER FRAME P/N 143A6115-5 IAW ECRA 5230-02326. THE REPAIR ACCOMPLISHED IN PART 1 IS A CATEGORY B REPAIR REQUIRING REPETITIVE INSPECTION REQUIRMENTS (RIR) STATED IN PART 2. REF: DIP L/P FOR INSPECTION IS 9581704 AND DIP L/P TO CONTACT ENGINNEERING IS L/P 9581866 ESFR# 3940 HAS BEEN CREATED.   ALL FUTURE WORK TO BE PERFORMED PER THE LATEST REVISION OF ECRA 5230-02326 AS STATED BY DIP L/P 9581704 & PLANNING DIP L/P 9581866. ESFR# 3940 NOTED BY MAINTENANCE, ALL FUTURE WORK TO BE PERFORMED PER THE LATEST REVISION OF ECRA 5230-02326 AS STATED BY DIP L/P 9581704 & PLANNING DIP L/P 9581866.

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