# SDR CALA2026062217257

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 18, 2026
- Submitted: June 22, 2026
- Operation: Air carrier
- Aircraft: [N72405](https://openairdocs.org/aircraft/N72405), registered now
- Make and model: Boeing 737924
- Aircraft serial: 30122
- Aircraft time: 68,768 hours, 28,904 cycles
- System (JASC): [3200 · Landing Gear System](https://openairdocs.org/jasc/3200)
- Part: Control Module
- Part number: 273A33016
- Part serial: 920
- Condition: Faulted
- Location: Zone 700
- Part time: 66,342 hours, 27,982 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026062217257

## Discrepancy

ON CLIMB OUT RIGHT DUCT PRESSURE INDICATED 0 PSI AND LEFT DUCT PRESSURE WAS 40PSI PERFORMED AMM 36-00-00-860-805. COULD NOT DUPLICATE. NO LEAKS OR FAULTS NOTED. & NOSE GEAR EXTENDED DOWN WHEN LANDING GEAR HANDLE MOVED TO OFF POSITION. REMOVED AND REPLACED A & B HYD SYSTEM ACOUSTIC FILTERS IAW AMM  29-11-27. LEAK CHECK GOOD AT THIS TIME.   REMOVED AND REPLACED WIRE HARNESS MW0311 AT #2 ENG IAW AMM 73-21-06-400-802-F00 UP TO AND INCLUDING STEP 5. E. C) PENDING FFCC VIBRATION SENSOR TEST. REMOVED AND REPLACED LANDING GEAR CONTROL MODULE UPTO AND INCLUDING STEPS 3.D.(17). EXCLUDING STEP 3.D.(13) LANDING GEAR   CONTROL SYSTEM TEST.

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