# SDR U5OA2026031200179

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 12, 2026
- Submitted: March 12, 2026
- Operation: General aviation
- Aircraft: [N999AA](https://openairdocs.org/aircraft/N999AA), registered now
- Make and model: Gulstm GIV
- Aircraft serial: 1286
- Aircraft time: 13,829 hours, 6,275 cycles
- System (JASC): [5343 · Fuselage, Landing Gear Attach Fittings](https://openairdocs.org/jasc/5343)
- Part: Mount
- Condition: Cracked
- Location: Zone 100
- Part time: 13,829 hours, 6,275 cycles
- Stage of operation: AP
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/U5OA2026031200179

## Discrepancy

PILOTS NEEDED TO BLOW DOWN THE LANDING GEAR BECAUSE THE NOSE GEAR WOULD NOT COME DOWN AND LOCK (UNDER NORMAL OPERATION). MAINTENANCE INITIAL EVALUATION FOUND THAT THE NOSE GEAR UPLOCK ROLLER WAS NOT ENGAGING WITH THE UPLOCK. FURTHER INVESTIGATION FOUND MOVEMENT IN THE NOSE GEAR UPLOCK ACTUATOR MOUNT AND STRUCTURE AND TWO CRACKS APPROXIMATELY 3-6 IN ON EACH SIDE OF THE FORWARD MOUNT.

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