# SDR TSAA0429071

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 20, 2004
- Submitted: September 28, 2004
- Operation: Air carrier
- Aircraft: [N805AL](https://openairdocs.org/aircraft/N805AL), registered now
- Make and model: Boeing 737-2M6C
- Registry model: [Boeing 737-2M6C](https://openairdocs.org/model/boeing-737-2m6c) (OpenAirDocs)
- Aircraft serial: 21809
- Aircraft time: 49,850 hours, 74,309 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Hydraulic System
- Condition: Contaminated
- Location: B System
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TSAA0429071

## Discrepancy

NON-ETOPS CARGO FLIGHT 909, HNL-LIH: ON CLIMB-OUT PASSING 1500 FT THE FEEL DIFFERENTIAL PRESSURE LIGHT ILLUMINATED.  RETURNED TO HNL.  REPLACED THE B HYDRAULIC SYSTEM RETURN FILTER AND CASE DRAIN FILTERS DUE TO CONTAMINATION, OPS CHECK GOOD.  REPLACED THE A SYSTEM RETURN FILTER AND DRAINED/RE-SERVICED THE A SYSTEM HYDRAULIC RESERVOIR, OPS CHECK GOOD.  CHECKED ELEVATOR PITOT SYSTEM FOR LEAKS IAW AMM 27-31-22, NO DEFECTS NOTED.  AIRCRAFT RETURNED TO SERVICE

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