# SDR EIAA2011152

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 20, 2011
- Submitted: August 23, 2011
- Operation: Air carrier
- Aircraft: [N471EV](https://openairdocs.org/aircraft/N471EV), registered now
- Make and model: Boeing 747273C
- Aircraft serial: 20651
- Aircraft time: 106,222 hours
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/EIAA2011152

## Discrepancy

UPON GEAR RETRACTION UNSAFE GEAR HORN GOES OFF UNTIL GEAR IS FULLY RETRACTED.  PERFORMED OPS CHECK FOR LANDING GEAR INDICATION AND WARNING PER B747 MM 32-61-00.  OPS CHECK GOOD.  INSPECTED WIRING FOR PRIMARY ACT TILT PER WDM 32-61-12 AND 32-61-7, NO FAULTS NOTED.  INSPECTED PRIM AND ALT LANDING GEAR LOGIC BOXES, NO DEFECTS NOTED.  OPS CHECK GOOD.

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