# SDR IPXA2021092374192

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 23, 2021
- Submitted: September 24, 2021
- Operation: Air carrier
- Aircraft: [N577UP](https://openairdocs.org/aircraft/N577UP), registered now
- Make and model: Boeing 747-44AF
- Registry model: [Boeing 747-44AF](https://openairdocs.org/model/boeing-747-44af) (OpenAirDocs)
- Aircraft serial: 35666
- Aircraft time: 48,440 hours, 7,302 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Landing Gear
- Part number: 272U440011751
- Part serial: TAG301224A
- Condition: None
- Location: Cockpit
- Stage of operation: CL
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2021092374192

## Discrepancy

INSPECTION TYPE:N/A* ATB** AFTER TAKEOFF EICAS MSG GEAR TILT INDICATED. EICAS MSG GEAR DISAGREE IN ASSOCIATION WITH QRH PROCEDURE.DISCUSS W FLT CREW, CONFIRM LH BODY WILL NOT RETRACT, FOUND LH BODY TRUCK POSITION ACTUATOR HYD SUPPLY HOSE LEAKING, R/R TUBE ASSY IAW B747 AMM 20-11-05/401 AND HYD#1 SYS BLEEDING AS PER AMM 29-11-00-292 AND 32-13-15-401-404-010. CONFIRM NO LEAKS FINDING. PN ON/OFF 272U4400-11751.

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