# SDR CALA2026051116165

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 9, 2026
- Submitted: May 11, 2026
- Operation: Air carrier
- Aircraft: [N27546](https://openairdocs.org/aircraft/N27546), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 64478
- Aircraft time: 11,981 hours, 3,949 cycles
- System (JASC): [5610 · Flight Compartment Windows](https://openairdocs.org/jasc/5610)
- Part: Window
- Condition: Leaking
- Location: Zone 200
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026051116165

## Discrepancy

LOUD NOISE FROM FRONT LT WINDOW AROUND V1 PASSING THRU 7500 VERY LOUD SQUEEL STARTED CREW REPORTS WHEN CLIMBING THE NOISE BECAME LOUDER. WHEN PUSHING SLIDING WINDOW CLOSED FARTHER DURING FLT THERE WAS NO CHANGE. BELIEVE THE NOISE CAME FROM THE CAPTAINS FWD FIXED WINDOW. POSSIBLY ONE OF THE CORNERS. PERFORMED CABIN PRESSURE LEAK TEST ON FRONT LT WINDOW IAW AMM 05-51-91-790-801. AIR BUBBLE LEAKS DETECTED ON MULTIPLE LOCATIONS OF WINDOW SEAL AT 4 PSID. CHKD ALL TORQUE ON NR 1 WINDOW SCREWS AND RETAINING SCREWS IAW AMM 56-11-11-400-801. FOUND 8 SCREWS THAT DID NOT MEET MINIMUM TORQUE VALUE, TORQUED ALL SCREWS TO 25IN/LB AND 70IN/LB AS REQUIRED IAW MM 56-11-11-400-801, APPLIED FAST CURE SEALANT AS REQUIRED AT 11AM, WAITING FOR SEALANT TO CURE & WILL REQUIRE A CABIN PRESSURE LEAK TEST IAW MM 05-51-91-790-801. ACP'D LEAK CHK IAW AMM 05-51-91-790-801. LEAK CHKD OK , NO COCKPIT NOISE NOTED.

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