# SDR UIEA2026081400761

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 13, 2026
- Submitted: August 14, 2026
- Operation: Air carrier
- Aircraft: [N407KZ](https://openairdocs.org/aircraft/N407KZ), registered now
- Make and model: Boeing 747-4KZF
- Registry model: [Boeing 747-4KZF](https://openairdocs.org/model/boeing-747-4kzf) (OpenAirDocs)
- Aircraft serial: 36134
- Aircraft time: 67,852 hours, 11,937 cycles
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Actuator
- Part number: 6580150417
- Part serial: SHL043
- Condition: Faulted
- Location: Zone 700
- Stage of operation: CL
- 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/UIEA2026081400761

## Discrepancy

EICAS MSG GEAR TILT WHEN AIRBORNE AND ATTEMPTED TO RETRACT THE LANDING GEAR AFTER TAKE-OFF.  T/S AND FOUND LT BLG TRUCK ALT DEFECTIVE & HYD LEAK FROM HOSE. R & R BOTH ACT & HOSE, THEN BLEED CHK, HYD FUSE INSP & RESET CHKS NORMAL. ALSO, PERFORMED PSEU GRD TEST & TEST PASSED PER AMM 32-13-15/401 & AIPC 32-13-01-20. NO ACTIVE MSG ON EICAS &CMC.

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