# SDR CALA2026041315333

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 12, 2026
- Submitted: April 13, 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: 17,773 hours, 5,914 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Part number: 147A311069
- Condition: Dented
- Location: Zone 200
- 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/CALA2026041315333

## Discrepancy

SMALL DENT REPORTED BY CATERING PICTURED BELOW.DAMAGE ON DOOR 2 L LOCATION OF DAMAGE IS AFT OF 2 L DOOR ABOUT 18 INCHES AT STA 1010 AND S-13L FOUND TO BE 2 IMPACTS CAUSING 2 DENTS WITH GOUGES IN THE BOTTOM OF THEM. REMOVED GOUGES REF SRM 53-00-01-1A-1. UPON QC INSPECTION FOUND REMOVED SKIN MATERIAL TO 0.026IN. THIS IS BEYOND SRM ALLOWABLE LIMITS OF 10 PERCENT SKIN THICKNESS OF ORIGINAL 0.071IN SKIN. QC PERFORMED NDT 51-00-00 PART 4 THICKNESS EPOCH 650. DEEPEST AREA OF IMPACT DEPTH MEASURED THICKNESS OF 0.045 SURROUNDING AREA 0.071 TRIM OUT DAMAGE PER SRM 53-70-01-2R-1 REPAIR 1 . NEED TO HFEC INSPECTION ALONG THE EDGE OF THE CUTOUT TO MAKE SURE IS CRACK FREE. C/W STEPS 6 OF AVO 17131 HFEC OF CUTOUT  PER NDTM 51-00-00 PROCEDURE 23  NO CRACKS NOTED AT THIS TIME. PERFORMED STEPS 1-5  PER AVO 17131 AND INSURANCE CUT BY .040" PER STP 7. C/W STEPS 1-5 OF AVO 17131 NO OTHER DAMAGE NOTED AT THIS TIME. C/W STEP 7 A,B AND C OF AVO17131. C/W STEP 8 OF AVO17131 MFEC PER NDTM PART 6 53-30-09 NO CRACKS NOTED AT THIS TIME. NEED TO REDO STEP 8 OF AVO17131 STEP WAS ENTERED IN ERROR. PERFORMED AVO 17131 STEPS 9 AND 10. NO DEFECTS NOTED. C/W STEP 9 OF AVO 17131 NO DAMAGE NOTED AT THIS TIME. C/W STEP 10 OF AVO17131 C/W STEP 8 AVO17131 REV A HFEC OF CHEM-MILLED AREA PER NDTM PART 6 51-00-00 PROCEDURE 23 NO CRACKS NOTED AT THIS TIME. ACCOMPLISHED STEPS 5A THROUGH 5E OF AVO 17131. DAMAGE HAS BEEN REMOVED. THERE ARE NO BROKEN, PULLED OR LOOSE FASTENERS. NO HOLES ARE ELONGATED. THERE IS NO DAM3.0 LBS.

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