# SDR UIEA200400146

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 12, 2004
- Submitted: September 9, 2004
- Operation: Air carrier
- Aircraft: N497MC
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29258
- System (JASC): [3251 · Steering Unit](https://openairdocs.org/jasc/3251)
- Part: Actuator
- Part number: 1U11715
- Condition: Malfunctioned
- Location: Nlg Steering
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA200400146

## Discrepancy

- REJECTED TAKEOFF DUE TO WARNING BODY GEAR STEERING CONFIGURATION.  GEAR CONTROL ON TAKEOFF ROLL AT 30 KNOTS.  PERFORMED RECHECK FOR CORRECT DE-ACTIVATION, ALL CHECK OK.  REMOVED BLANKS ON DE-ACTIVATED ACTUATOR.  FOUND TRAPPED PRESSURE IN ACTUATOR.  RELEASED TRAPPED HYDRAULIC PRESSURE, ACTUATOR HOT MESSAGE ERASED AFTER PRESSURE RELEASED.  SYSTEM OPS CHECK AND CONFIGURATION PER DDPG 32-53-01.  (M)

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