# SDR CALA2023081802551

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 15, 2023
- Submitted: August 18, 2023
- Operation: Air carrier
- Aircraft: [N81449](https://openairdocs.org/aircraft/N81449), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 31651
- Aircraft time: 35,961 hours, 12,973 cycles
- System (JASC): [3200 · Landing Gear System](https://openairdocs.org/jasc/3200)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: TO
- 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/CALA2023081802551

## Discrepancy

GEAR FAILED TO RETRACT AFTER TAKEOFF 32-35-11-2. FLAGGED FOR SDR. L/G MANUAL EXTENSION DOOR WAS IN OPEN POSITION UPON ARRIVAL DUE TO FIRE EXT FALLING OFF THE WALL REF L/P 5465651. INSTALLED NEW FIRE EXTINGUISHER BRACKET AND SECURED FIRE EXTINGUISHER REF AMM 26-26-00CHECKED ACCESS DOOR LIMIT SWITCH  28VDC/0VDC SIGNAL TO ALTERNATE EXTENSION SOLENOID VALVE AT OPEN/CLOSE POSITIONS FOUND NORMAL IAW WDM BITE TESTED PSEU NO FAULT HISTORY. C/W ALTERNATE LANDING GEAR TEST REF TASK 32-31-51-400-801 FOUND SATISFACTORY.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.