# SDR CALA2012030700169

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 7, 2012
- Submitted: March 7, 2012
- Operation: Air carrier
- Aircraft: [N13720](https://openairdocs.org/aircraft/N13720), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28939
- Aircraft time: 43,971 hours, 14,198 cycles
- System (JASC): [3233 · Landing Gear Actuator](https://openairdocs.org/jasc/3233)
- Part: Lock Actuator
- Part number: 273A12011
- Part serial: 0236
- Condition: Malfunctioned
- Location: Nlg
- Part time: 43,970 hours, 14,198 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/CALA2012030700169

## Discrepancy

DURING AFTER T/O CHECKLIST NOSE GEAR UNSAFE (DISAGREEMENT) LIGHT ILLUMINATED.  REPLACED NOSE GEAR LOCK ACTUATOR PER AMM 32-33-21.  OPS AND LEAK CHECK NORMAL.  GEAR INDICATION NORMAL. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1400184  S/N OFF 00236 ACTUATOR, NLG, OFF 29-3233-9-9001 0236 ON 29-3233-9-9001 0312.

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