# SDR AWXA200500304

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 3, 2005
- Submitted: March 4, 2005
- Operation: Air carrier
- Aircraft: N323AW
- Make and model: Boeing 737-3Y0
- Registry model: [Boeing 737-3Y0](https://openairdocs.org/model/boeing-737-3y0) (OpenAirDocs)
- Aircraft serial: 23684
- Aircraft time: 52,363 hours, 31,403 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Module
- Part number: 65448917
- Part serial: 2852
- Condition: Faulty
- Location: Zone 211
- Part time: 52,360 hours, 31,402 cycles
- 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/AWXA200500304

## Discrepancy

AFTER DEPARTURE AT APPROXIMATELY 1,000 FT A-SYSTEM HYDRAULICS AND FEEL DIFFERENTIAL LIGHT ILLUMINATED, TURNED BACK TO PHX, FLIGHT CONTROLS FELT STIFF BUT FUNCTIONAL.  MAINTENANCE FOUND A-SYSTEM FLIGHT CONTROL MODULAR PACKAGE FAULTING, REPLACED MODULAR PACKAGE IAW BMM 27-09-21, OPS CHECK GOOD.  FAILURE ANALYSIS TEST OF FLIGHT CONTROL MODULAR PACKAGE AND COULD NOT FIND ANY DEFECTS IN UNIT. A FULL FUNCTIONAL TEST WAS ACCOMPLISHED PER BOEING DWG 65-44891 REV. E, WITH NO DEFECTS NOTED. UNIT WAS DISASSEMBLED AND THE ONLY DEFECT FOUND WAS A SWOLLEN, SLIGHTLY DISTORTED O-RING SEAL ON POPPET ASSEMBLY FOR COMPENSATOR UNIT. (CLOSED)

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