# SDR SB06077

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 9, 2006
- Submitted: August 10, 2006
- Operation: Air carrier
- Aircraft: [N422US](https://openairdocs.org/aircraft/N422US), registered now
- Make and model: Boeing 737401
- Aircraft serial: 23989
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Circuit Card
- Part number: 806002
- Condition: Faulty
- Location: Mlg
- Stage of operation: CL
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SB06077

## Discrepancy

FLL - ON CLIMBOUT FROM PBI, EN ROUTE TO DCA, CREW REPORTED A LANDING GEAR INDICATION THAT THE NOSE GEAR WAS STILL IN THE GROUND MODE.  ALSO, THE GEAR HANDLE WOULD NOT MOVE AND NO CIRCUIT BREAKERS WERE TRIPPED.  CREW PERFORMED QUICK REFERENCE HANDBOOK PROCEDURES FOR GEAR LEVER, WOULD NOT MOVE UP AND DIVERTED TO FLL.  FLIGHT LANDED WITHOUT INCIDENT.  NO EMERGENCY WAS DECLARED.  MAINTENANCE TROUBLESHOT PROBLEM TO A FAULTY M911 AIR SENSING CIRCUIT CARD.  REPLACED SAME AND OPERATIONALLY CHECKED NORMAL PER MM 32-09-20.  GEAR LEVER OPERATES NORMAL.

---
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.