# SDR UIEA2022041400303

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 13, 2022
- Submitted: April 15, 2022
- 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: 52,075 hours, 9,649 cycles
- System (JASC): [3233 · Landing Gear Actuator](https://openairdocs.org/jasc/3233)
- Part: Actuator
- Part number: 1387T1007
- Part serial: 2881
- Condition: Inoperative
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2022041400303

## Discrepancy

FUNCTION FAIL - DUE TO LH WING ALTERNATE EXTENSION SYSTEM TEST. FOUND THE LH WLG ROTARY ACTUATOR ROTATION ACTION CAN'T STOP(<P>1. IAW AMM 32-36-01-004-001 REV 103 AND AMM 32-36-01-404-009 REV 103 REPLACED LH WLG ALTERNATE ROTARY ACTUATOR. 2. CONDITION CHECK NORMAL</P>)

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